Gen III - Speed Density VE Table and MAF Tuning Instructions with a Wideband O2 Sensor Create by 69lt1bird - Jeff Anderson 1 These instructions are written for the beginner and intermediate user of HP Tuners software. L5P ECM-Exchange HP Tuners exclusively presents L5P ECM Exchange Service, offering the power to tune 2017+ Chevrolet Silverado / GMC Sierra 2500/3500 6. Fully compatible with the Innovate LM1, LM2, and any other wideband controller that uses the LSU4 sensor. I've read the long (and really good) thread here on idle tuning on this forum I've even been on the HPTuners forum and read another great thread on the subject. Sorry for the interruption. which is SD i was planning on getting a bigger tb and the cobra upper and lower intake also. Manifold vacuum, or engine vacuum in an internal combustion engine is the difference in air pressure between the engine's intake manifold and Earth's atmosphere. That's what carbs, coils, and distributors are for. What is the definition of "Engine Load" A lot of things I have read make reference to engine load but it is not clear if there are different meanings. Air flow meters utilize the best technology that was available when they first came into use in the early days of electronic fuel injection. There is a calibration table for the maf sensor voltage. but would it be. Stated another way, it’s a measure of the volume of air occupying its cylinders at any given engine speed vs. It’s 80,000 btu. FAQ stands for 'frequently asked questions'. Now enhancing these to new heights with a new feature rich VCM Editor and VCM Scanner, coupled together with the latest generation MPVI2, this is only tuning and diagnostic solution you'll ever need for your modern OBDII vehicle. The time has come to add this site to my sponsored list. Special innovations in the core and end tanks allow it to operate at continuous pressure of up to 150 PSI. Between idle (~5 degree throttle) to ~30 deg throttle angle the amount of mass air flow (which is proportional to power) puts our cars at a very low weight to power ratio, both in terms of absolute value and rate of change. At this point you can sit happy where you're at or you can determine whether or not the idle speed can come down. *UPDATE* I am using HPTuners FYI as someone mentioned hypertech. I’m far from being an expert however one needs to start somewhere…. I started with the stock tune and worked from there. The MAF sensor converts this current into a frequency which is read by the pcm and calculates the air flow in grams per sec (gm/sec). 100mm Maf kickin my Butt!!! - HP Tuners Bulletin Board here are a few picts from the thread:. It will show you many issues with your car that can occur over time or when doing modifications – be it if they show up as detonation events, air/fuel errors, or boost errors. I think it is 200 bucks plus a smarty tuner for engine codes to delete these items, I also watched an interesting video about the carbon foot print that the EGR and DEF systems add to the environment do to the extra fuel burn caused by EGR and catalectic. Chriscamaro enjoys modifying cars and has a fixation on science and technology. I will be attempting to turn a standard BF XR6T tune into something that will run the following: ID1000, intercooler, dump and ~15psi. The Mass Air Flow (MAF) sensor measures the amount of air ingested by the engine. In the LS1 HP Tuners world, its called a Short Pulse Adder. 0) & OP Configuration Data logging is something that anybody with a Subaru should be able to do in my opinion. ODBII tuning using HP tuners is roughly proportional to. •Adaptive Idle Tuning (Proportional, Integral throttle controls) The Tuning School 4021 - GM Tuning using HP Tuners Level 1 (Beginner/Intermediate) Course. Typical full power AFR are 12:1 to 13:1 for gasoline. The proportional will cause an immediate jump in OP, then the integral will cause the OP to continue ramping in the same direction. These parameters control the desired idle RPM and the behavior of the Idle Air Control (IAC) motor or Electronic Throttle Control (ETC) during idle conditions. By increasing it to 5000 it will toggle between min spark (-7) and max spark (MBT ~25 deg) causing even more lope. Learn about such topics as You can tune with confidence knowing that we have developed a safe, effective and repeatable process for you to follow. FAQ stands for 'frequently asked questions'. Power & Performance News is a hybrid of content that was originally published at PPNDigital. I have recently dropped in a 2005 Chevrolet Silverado L33 all aluminum 5. Air/fuel ratios are typically measured using a so-called "wideband' air/fuel ratio sensor. I will have to do 67500 EGR service soon where they will clean EGR cooler and lines and replace crank case filter $750 for the service work. E40 LS2 c6 cam+ idle tuning If this is your first visit, be sure to check out the FAQ by clicking the link above. My 12hp diesel burns 1/4 gallon per hour at 50% power at idle it burns about 1 gallon every 8hrs. Those programs pretty much give you full access to the PCM, including changing timing, fuel tables, deleting trouble codes, etc. And we're going into fault which is ideal considering this is a webinar on drive by wire throttle control and we are now going into fault. Another thing to note is everyone keeps using the ISC airflow as the main tuning device. For the HPTuners platform, as far as I'm aware, there are precisely 2 tables that are available, which are helpful for nitrous delivery. I was already SC with DTLT headers and 2. Low and behold, they would go up, quite significanly too. Note: Excessive spark advance will cause knock (detonation, pinging) and lead to severe engine damage. And we're going into fault which is ideal considering this is a webinar on drive by wire throttle control and we are now going into fault. I have no idea of the benefits that not having an egr would have though. This prevents the PCM from predicting any minimum airflow which would prevent you from finding the real minimum. Manifold Absolute Pressure is the pressure delivered to the combustion chamber and manifold vacuum is the remaining pressure in the intake manifold. 2071 in kilograms per cubic meter (kg/m 3) and approximately equal to 1000 times the concentration C in milligrams per liter (mg/L):. Mode table set. Injector: A device for delivering metered pressurized fuel to the intake system or the cylinders. Last FAQ update 2019-05-07 Q. PLEASE READ THROUGH ALL FOR INFO IN DETAIL OR PLEASE SKIP TO POST 25 FOR A FASTER SIMPLIFIED VERSION While the challenge has always lied in perfecting the VVE table I have found getting the perfect idle more challenging. Attached is a video of my little scream enjoying another day of R&D dyno tuning. but would it be. After doing some research on Mass Airflow Sensors (hot wire variety) I learned that they actually output a voltage that is (non-linearly) proportional to the mass of the air traveling through the sensor. EDS50 [quote][/quote]If I am driving and push in the clutch sometimes it will idle down to set rpm perfect, other times it will just drop really fast and stall. Features Custom made hoses, fittings, wiring, instructions etc. IDLE TUNING The following is a collection of idle tuning notes, tips 'n tricks and How-2's for idle tuning a big cam (or any cam for that matter) that I used when dialing in my 248/254,. This is a discussion on p1133 and p1153 within the General Help forums, part of the LSx Technical Help Section category; I believe these codes are from the front O2 sensors. 4 cf fire box. Proportional fuel acts like an on/off switch to keep the fuel moving around the current O2 Rich/Lean vs. THIS THREAD OUTLINES E38 IDLE TUNING AND ADJUSTMENTS. I bet it'll drive better with it hooked it. Back in the 70's, EBC Brakes was the first to develop a complete aftermarket range for the motorcycle industry and supplies the majority of the world aftermarket volume in motorcycle brake and clutch parts with continued innovations such as the adoption of the NUCAP NRS hook system. If it is that the stock intercooler works as well or better because it only gained 7deg, you should check out Newton's Law of Cooling. Just wanted to know how to raise the WOT converter lock upfor some reason my tuner put it at 85 which to me makes no sense. then multiply that value by -1 to make it negative. Contributed By: Enginebasics. Those programs pretty much give you full access to the PCM, including changing timing, fuel tables, deleting trouble codes, etc. One thing i can say for sure, after changing my Y-pipe for a decated one, i had to change my fuel pump cause i was not able to maintain AFR. Once upon a time an engine needed three things to run: fuel, air, and fire. Chevy Forums FREE technical assistance for your restoration and repair. Umm no that would be exceptionally wrong. This table is used to lookup the Airflow (g/sec) value for a given frequency and ultimately calculate the Airmass (g/cyl) used for fuelling calculations. GM > Engine > Idle > Idle RPM. What's The Difference Between MAF And Speed Density Setups? Mass air flow and speed density are the two most common means of measuring how much air is being sucked into an engine, but what's the. Tuning and understanding Boost By Gear. if you add to this number it will richen the mixture while still keeping the same mv output as before, e. One definition seems to be that the engine load is the amount of air flowing through the engine as a percentage of the theoretical maximum. Tuners can get around this limit by fudging tables, but at this level it is wise to switch to a speed density system. 02 as to what has worked best for you guys, but try and keep the thread on track with the same type of information. To meter fuel to the engine in the right quantity. During MAF failure the Knock Learn is set to maximum and the Low Octane table is used (HP Tuners speed density enhancements allow both spark tables to function). Most of my business has been word of mouth, so we are taking it another gear up. This time I want to talk about the Ecotec ECM tuning changes done so far. 5lb/min at peak airflow and. Low and behold, they would go up, quite significanly too. Since I am running stock LT1 injectors, in the truck, at stock LT1 fuel pressure, I was able to get this directly out of a stock LT1. Idle dipping below commanded I've been working on tuning this car quite awhile now here and there when I have time (Working 7 days a week sometimes 16 hours a day and having a newborn here) it's just about nailed down but I notice if I ease into the throttle real lightly my idle dips down to around 500 and comes back up when I'm commanding 850. THIS THREAD OUTLINES E38 IDLE TUNING AND ADJUSTMENTS. 5 lb/hr for injectors. For the HPTuners platform, as far as I'm aware, there are precisely 2 tables that are available, which are helpful for nitrous delivery. Next, start from idle and increase throttle opening while watching MAF reading. So I've been meaning to do a write-up on this tune for a while, but just haven't had the time. Oxygen Sensor Technologies. IDLE TUNING The following is a collection of idle tuning notes, tips 'n tricks and How-2's for idle tuning a big cam (or any cam for that matter) that I used when dialing in my 248/254,. pantera info table table_10 table_11 table_12 table_13 table_14 table_15 table_16 table_17 table_18 table_19 table_2 table_20 table_21 table_22 table_23 table_24. Mass flow is a specific value independent of gas properties and compressor inlet conditions. There is a calibration table for the maf sensor voltage. For those of you who have waited and inquired, it is finally a real thing. It will be harder to close the decklid on some, easier on others. 0 counts correspond to a fully closed passage and 140 counts or more corresponds to full flow. I understand a dyno tune is better but I'd rather say my car is built and tuned by me, ya know. Tuning and understanding Boost By Gear. The voltage signal is proportional to the amount of unburned oxygen in the exhaust. GM > Engine > Idle > Idle RPM. Bad Luck Garage. Vendors are now including airfoils with their MAF ends to reestablish a smoother airflow. Do you have a HP Tuners and a log file showing this problem? Looking through my copy of HP tuners the only thing that I can see that is AC specific is the MAF under the Adaptive Idle Airflow. Yes, we can. 24g/cyl!!! I have not seen a NA stock cube motor do that ever. HPTuners is the tool but what to do with and how to use it, is a very time-consuming task! In the next installment I'll go into more details about HPTuners… This entry was posted in 1. Many years have passed, the styles have changed but even after looking at my notes from almost 20 years ago - my goals for my Old Friend have changed very little. F — MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING; F02 — COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS; F02P. - Idle Overspeed Startup Airflow Time - Idle Underspeed Startup Airflow Time - Idle Integral Airflow Limits - Fan Low On Airflow - Fan Med On Airflow - Fan Hi On Airflow - Fan Low Off Airflow - Fan Med Off Airflow - Fan Hi Off Airflow Closed Loop Fuel - Integrator Delay vs Airflow Mode - Proportional Base - Proportional Gain - Proportional ECT Mult. The collection of these fuel tables, one for each cylinder, and the corresponding ignition advance tables are referred to as maps. Now enhancing these to new heights with a new feature rich VCM Editor and VCM Scanner, coupled together with the latest generation MPVI2, this is only tuning and diagnostic solution you'll ever need for your modern OBDII vehicle. My setup is similar to this one with the exception that I chose to use a stud on the decklid bolt location. Select -256 and make it 2. Stick to 1. The tutorial approach always begins with the stock settings and then begins to modify them partly in accordance with your Cam/overlap specs and then fine tuning using eduacated guesses as you stated. By directly altering the pulse width of the injectors you can flow a proportional amount of additional fuel in proportion to nitrous flow, as a function of temperature. whats the difference? what would be the upside of having maf instead of speed density. The Current flow is proportional to the amount of Oxygen present. GM > Engine > Idle > Idle RPM. it's a matter of preference in the end,. 0 inches as a rule of thumb. these represent the stoich (14. PLEASE READ THROUGH ALL FOR INFO IN DETAIL OR PLEASE SKIP TO POST 25 FOR A FASTER SIMPLIFIED VERSION While the challenge has always lied in perfecting the VVE table I have found getting the perfect idle more challenging. As temperature increases, resistance increases causing a voltage drop on the other side of the wire. The fact that most OBD 2 cars today you can just hook up to a laptop and tune with a program like HP Tuners. Not to be confused w/ the weight to power ratio that is usually published. Tuners can get around this limit by fudging tables, but at this level it is wise to switch to a speed density system. I think it is 200 bucks plus a smarty tuner for engine codes to delete these items, I also watched an interesting video about the carbon foot print that the EGR and DEF systems add to the environment do to the extra fuel burn caused by EGR and catalectic. When the engine repeatedly heats up and cools down it will suck air into the valve covers and in time condensation builds up. This poses a problem for anybody wanting to use injectors that go past this. I then build a new table with b1845, this will ensure a dead smooth idle. The current increase or decrease is proportional to the air flow. Those programs pretty much give you full access to the PCM, including changing timing, fuel tables, deleting trouble codes, etc. which is SD i was planning on getting a bigger tb and the cobra upper and lower intake also. HPTuners Tuning. one thing you can do is in HP tuners go to open closed loop tab, and select O2 rich/lean vs airflow. the physical volume (piston displacement) of the engine. Its not perfect & idle tuning is not always cut & dry but this has always been a very good starting point for idle tuning. Basically, the airflow over the back of the car is so dirty that the spoiler has nothing to spoil. The PCM receives the airflow signal from the MAF (in Hz, i. ppm is a value that represents the part of a whole number in units of 1/1000000. Porting your MAF either by MAF ends, physical porting, or adding a completely new housing, increases air volume into the motor, but decreases air velocity. Air flow Modeling (MAF vs Speed Density) When making modifications to the engine in becomes necessary to also recalibrate the engine controller. A wideband O2 sensor is required for the tuning described in these procedures. This is because it is the air flow that limits power (not fuel flow), To get maximum fuel efficiency, we want to make the mixture a little leaner (higher AFR, about 15:1 to 16:1) than stoich to be sure of burning all the fuel, To get minimum emissions, we want to run stoich. The current increase or decrease is proportional to the air flow. The door is pushed open further as air flow increases. First we need to understand the idea of Ambient. When it did hit 221, it was only a minute or two before the temp started to drop back down. Last FAQ update 2019-05-07 Q. I have several tuning options on my website, so check it out.  Flathead County Montana. currently i am interested in tuning the car via Open Loop and tune with the MAF and wideband. It works by estimating airflow based on a few known parameters, and then calculating fuel flow directly from exhaust lambda. HP Tuners, the home of VCM Suite and the MPVI since 2003. Chriscamaro enjoys modifying cars and has a fixation on science and technology. The second table is IAT spark correction which specifies advance as a function of IAT and cylinder air mass. Learn about such topics as You can tune with confidence knowing that we have developed a safe, effective and repeatable process for you to follow. So the other day at work, I decided on my lunch break that I was going to make myself a dual throttle body intake manifold for my 2. I was already SC with DTLT headers and 2. They produce a varying voltage that is proportional to air flow. So it is effected by the Integral Step size. The tables you all are talking about have been in 2. mass air flow vs. I have recently dropped in a 2005 Chevrolet Silverado L33 all aluminum 5. no guarantees these are the same for the other engines, but i would assume they would be similar listed as Pontiac G6 (V6) 2006 Scanner PIDs: Engine: -General --Absolute TPS (SAE) (%). 451mv @ WOT=890-900 on a scantool, and about 12. The flowchart in Figure 6-2 below shows just that. Circuit Description. When it did hit 221, it was only a minute or two before the temp started to drop back down. When the engine repeatedly heats up and cools down it will suck air into the valve covers and in time condensation builds up. is a manufacturer of electronic air pressure regulators and air flow control valves. With large injectors like my 42 lbs-ers in my Camaro, I was having all kinds of issues until I got this table correct. What is an engine management system? Basic Engine Management System or EMS is a self contained custom built computer which controls the running of an engine by monitoring the engine speed, load and temperature and providing the ignition spark at the right time for the prevailing conditions and metering the. PCM Diagnostics & Tuning - PCM tuning and diagnostics for GM LS1, LS2, LS3, LS6, and LS7 V8 engines discussion, how-to guides, and technical help. The effects of Air Intake Temps on EFI How to tune for changes in AIT's. A pressure sensor is a device for pressure measurement of gases or liquids. Between idle (~5 degree throttle) to ~30 deg throttle angle the amount of mass air flow (which is proportional to power) puts our cars at a very low weight to power ratio, both in terms of absolute value and rate of change. That was followed by displacement-balancing (or "CC'ing") the combustion chambers. Forum for discussions about the E39 ECM in NG9-5 and 9-3Griffin turbo4. I'm taking this directly from HP Tuners VCM Editor - Engine - Airflow [ECM] 12160 MAF Airflow vs. I don't exactly know all the in's and outs but my friend/business associate is an UpRev dealer and has told me a little about the Nissan tuning. This means now we can calculate Pulse Width directly from the airflow number, no matter what the source of it might be, MAF or Dynamic Airflow are both fully viable sources. is there any delay on the two? When throttle is opened to say 50% is the reaction of the throttle plate immediate and proportional? Can you record with out the engine running? _____. I disable B1843 by leaving the tables zeroed out as I previously mentioned. Since I am running stock LT1 injectors, in the truck, at stock LT1 fuel pressure, I was able to get this directly out of a stock LT1. The Injector Dynamics fuel flow calculator is not based on efficiency. Basically short and long term corrections. Select -256 and make it 2.  Flathead County Montana. Codes have to be set twice before it turns on the SES light. RPM Error: Get rid of the zero values in the Idle Proportional Airflow vs. Adi a b Michael P. Air flow Modeling (MAF vs Speed Density) When making modifications to the engine in becomes necessary to also recalibrate the engine controller. Most of my business has been word of mouth, so we are taking it another gear up. How to tune using HP Tuners Software This has been around for a while but just thought it deserved a re-post for those like myself who are new to tuning. Something like that may be possible for the G8 VCM's but that would have to be something discussed with the engineers at Vector or HP Tuners who reverse engineer this stuff. The sensor generates a signal that is proportional to the amount of vacuum in the intake manifold. Perform the same checks while lightly tapping on the sensor, or heating the sensor with a blow dryer. Set idle adaptive spark control overspeed and underspeed tables and adaptive idle proportional and integral tables to stock. HPTuners is the tool but what to do with and how to use it, is a very time-consuming task! In the next installment I'll go into more details about HPTuners… This entry was posted in 1. *UPDATE* I am using HPTuners FYI as someone mentioned hypertech. Proportional gain is how much of the ego correction is used to adjust the VE value. And we're going into fault which is ideal considering this is a webinar on drive by wire throttle control and we are now going into fault. In such cases, the light should go off by itself after a short time. Mass or weight flow. Ignition timing curves; Fuel curve (Air Fuel Ratio). Manifold vacuum, or engine vacuum in an internal combustion engine is the difference in air pressure between the engine's intake manifold and Earth's atmosphere. You may have to register before you can post: click the register link above to proceed. THIS THREAD OUTLINES E38 IDLE TUNING AND ADJUSTMENTS. After the MAF here are the other sensors I can see that have an effect on idle speed. Airflow Mode: This table returns the base proportional % fuel change. These parameters control the desired idle RPM and the behavior of the Idle Air Control (IAC) motor or Electronic Throttle Control (ETC) during idle conditions. DTC P0101 Mass Air Flow (MAF) Sensor Performance. Got home and pulled the car apart to get at the middle intake, brought it to work with me the next day and stayed late building this:. Closed Loop Proportional Base vs. We put about 120 miles round trip on it, and my temps never went above 221 degrees. Typical full power AFR are 12:1 to 13:1 for gasoline. - Set idle adaptive spark control overspeed and underspeed tables and adaptive idle proportional and integral tables to stock. Contributed By: Enginebasics. Controls airflow through runners in a split intake manifold. This poses a problem for anybody wanting to use injectors that go past this. Occasionally a WB02 sensor fails, this is a handy chart to replace it. So between 13 and 16, I'd still expect to see an upward trend for MAF and just little "bumps" where the boost varies. It is pretty much common knowledge the under hood temps on most street cars are as bad or worse as a race car where airflow is usually optimized. Stated another way, it’s a measure of the volume of air occupying its cylinders at any given engine speed vs. Hi all, long time reader first time poster here. My setup is similar to this one with the exception that I chose to use a stud on the decklid bolt location. New brakes, intermittent ABS light and battery light. - Set idle adaptive spark control overspeed and underspeed tables and adaptive idle proportional and integral tables to stock. HP Tuners’ VCM software is one highly regarded stock computer tuner program. currently i am interested in tuning the car via Open Loop and tune with the MAF and wideband. CARiD offers an entire line of high-quality 2006 Chevy Malibu performance parts that can upgrade your car to deliver the power, handling and braking you want. This prevents the PCM from predicting any minimum airflow which would prevent you from finding the real minimum. Wow! What a package! When you purchase this bundle you will get 1 YEAR of GM HP Tuners Gen III/IV Tuning Support via our online ticketing system. Umm no that would be exceptionally wrong. The direct measurement of the air entering the engine is more accurate than calculating the airflow from the MAP, the IAT and the engine speed (speed/density). With its NTK oxygen sensors launched in the 1980s, NGK was among the pioneers in this field. LS Big Cam Idle P2 If you're one of the lucky ones who experienced the first result, congrats, your work is just about finished. 92, or 106" MAP (75. By rotating the barrel a hole cut in either side allows different amounts of gas and air mix to flow through the carb. In water solution, the concentration C in parts-per million (ppm) is equal to 1000 times the concentration C in grams per kilogram (g/kg) and equal to 1000000 times the concentration C in grams per liter (g/L), divided by the water solution density at temperature of 20ºC 998. no guarantees these are the same for the other engines, but i would assume they would be similar listed as Pontiac G6 (V6) 2006 Scanner PIDs: Engine: -General --Absolute TPS (SAE) (%). Controls airflow through runners in a split intake manifold. Airflow readings hit a flatline at about 58lb/min and stay there until redline. Plenty of reading and feedback at www. Mode table set. THIS THREAD OUTLINES E38 IDLE TUNING AND ADJUSTMENTS. Fuel control assumes a simplistic relationship between airflow, alpha, and N, i. 5 will adjust VE by 7. one thing you can do is in HP tuners go to open closed loop tab, and select O2 rich/lean vs airflow. The proportions are somewhat ridiculous, please make sure it will fit before ordering. com as well as original content that was created for this quarterly print magazine. i move it to slow down the time it takes to get into boost it helps a little bit for traction purposes unlike you i have my bbv running off of atmosphere meaning there is no computer control whatsoever but moving the bbv will have the same effect on your car as it does mine but you also have the luxury of being able to go into the comp and change the throttle % at which your blower will make boost. Manifold vacuum is an effect of a piston 's movement on the induction stroke and the choked flow through a throttle in the intake manifold of an engine. In order to figure out what the theoretical amount of air your engine will "ingest" at a certain rpm, you will have to answer a few questions. Under Idle, Idle Airflow, Base Running Airflow, zero out the entire Airflow Final Minimum table. The increase in airflow though, typically offsets the increase in turbulence, so it's a good mod. This movement controls airflow around the throttle plate which in turn controls engine idle speed, either hot or cold. Hi all, long time reader first time poster here. OVERALL THAT'S A GAIN OF 126 HORSEPOWER AND 103 POUNDS OF TORQUE TO THE WHEELS, AND WE'RE STILL NOT DONE WITH THIS RAM. In the case of the hacked up FI tune I knew the car ran on maxed out MAF, so I just used the maximum value from the MAF table, 59. While driving yes it has occurred, but it most quickly and predictably does so during low speeds/bumper-to-bumper traffic. Sure they work well in a stockish vehicle, i still prefer to see the live value rather than the learned one. but would it be. Contributed By: SDSEFI. He can sell you that whole package as well (pads the price here too) and will include support for you to write a tune. com (1997-up cars only Flow rate is proportional to power output. The tutorial approach always begins with the stock settings and then begins to modify them partly in accordance with your Cam/overlap specs and then fine tuning using eduacated guesses as you stated. a stock GTO tune is 451mv. On my car, Ive been into the ECM programming, and a high IAT causes it to pull a ton of ignition timing. To use this method, you will need a MAF with electronics that have been modified such that it will output a signal proportional to an airflow that is 19/39 times as great as the stock MAF would measure. , at larger throttle openings, and/or higher rpm, more air flows into the engine, so it needs more fuel to. The bigger the cam, the more airflow you may need in the Startup Airflow. For the purposes of this.  Flathead County Montana. But once you open that sheet metal, the Barracuda’s original 275-horsepower 5. Attached is a video of my little scream enjoying another day of R&D dyno tuning. Not to be confused w/ the weight to power ratio that is usually published. Contributed By: SDSEFI. The ultimate TBI mods are a set of modifications that improve the airflow and fuel into your engine. For example, if your stock Airflow Final Minimum values were in the 6-7 gms/sec range and you adjusted them up by 4 to obtain a smooth idle, do the same for the Startup Airflow table and add perhaps a tad more if needed to ensure proper engine start on the first attempt. Contributed By: Enginebasics. Proportional changes are direct adjustments to airflow where integral is a sum of these adjustments. Project: Pathfinder will serve as the blank canvas for DSX Tuning to develop products for the C7 ZR1 market. owned by idle tuning. Idle The PCM has a number of parameters that influence the idle behavior of the engine. 1) was introduced into production starting with 2006 model year vehicles (see bulletin 04-07-30-037D), there are still some misunderstandings about it. The resto-modded ‘Cuda is the creation of aftermarket auto builder Speedkore with some assistance from HP Tuners. Forum for discussions about the E39 ECM in NG9-5 and 9-3Griffin turbo4. DTC P0101 Mass Air Flow (MAF) Sensor Performance. 02 as to what has worked best for you guys, but try and keep the thread on track with the same type of information. Low and behold, they would go up, quite significanly too. My 12hp diesel burns 1/4 gallon per hour at 50% power at idle it burns about 1 gallon every 8hrs.  Table used to set your desired RPM’s at idle. Oxygen Sensor Technologies. Air-to-air intercoolers must be placed in a location with sufficient airflow or they will not be able to effectively exchange heat. This is the best kit on the market for the C7. but it seems like this tsb falls right into play except my pcm innformation is *86yLAUK151560ANU* and serv no 12597520. Having said that, I've decided that the S4 community could really benefit from knowing about this tune as it has totally transformed my S4 from a car that I liked driving, to one that I LOVE driving Before I begin, I want to lay out one simple ground rule. Both TP sensor signal voltages are low at closed throttle and increase as the throttle opens. B1845 is proportional correction and integral is 1843. So it is effected by the Integral Step size. Classifications. These parameters control the desired idle RPM and the behavior of the Idle Air Control (IAC) motor or Electronic Throttle Control (ETC) during idle conditions. The MAF sensor works by outputting a frequency signal that is proportional to the airflow through the meter. This problem came after i got. FAQ stands for 'frequently asked questions'. It was higher at 800 until the coolant temp reached 60F or so, then went to 550. So in the case of this car, we'd get 24hp correction. Early OEM systems were equipped with velocity airflow meters but the first aftermarket EMS in the U. If it is that the stock intercooler works as well or better because it only gained 7deg, you should check out Newton's Law of Cooling. GM > Engine > Idle > Idle RPM. See why in Jim's Enginology department of the April 2013 issue of Circle Track Magazine. 2-liter supercharged HEMI V-8 engine that produces a whopping 720 horsepower. Perform the same checks while lightly tapping on the sensor, or heating the sensor with a blow dryer. Note: Excessive spark advance will cause knock (detonation, pinging) and lead to severe engine damage. The MAF sensor converts this current into a frequency which is read by the pcm and calculates the air flow in grams per sec (gm/sec). I started with the stock tune and worked from there. B1845 is proportional correction and integral is 1843. ppm is a value that represents the part of a whole number in units of 1/1000000. A pressure sensor usually acts as a transducer; it generates a signal as a function of the pressure imposed. which is SD i was planning on getting a bigger tb and the cobra upper and lower intake also. When the PV starts to move, the proportional will cause the OP to move back the other way, and the integral action will diminish as the PV approaches the SP. The resto-modded ‘Cuda is the creation of aftermarket auto builder Speedkore with some assistance from HP Tuners. The unlocked units from HP Tuners had literally just arrived while we were there that day and some of the technicians were in the process of changing them out Ironically, just after this record was set, another C7 ZR1 from Total Performance Racing at the Street Car Takeover in Bristol took at stab at the same record. The following is a article about how AIT's( Air Intake Temps) effect how a motor runs. The TP sensors provide the powertrain control module (PCM) with a signal voltage proportional to throttle plate movement. Select -256 and make it 2. A complete package consisting of an unlocked ECM and the credits required for tuning will soon be available through DSX Tuning. The mass is also similarly proportional. With large injectors like my 42 lbs-ers in my Camaro, I was having all kinds of issues until I got this table correct. Output Frequency: This table is used to calibrate the MAF sensor. A quick way to determine if the reduced capability of a system is O2 sensor or secondary air flow-related, is to first run the test above. if you add to this number it will richen the mixture while still keeping the same mv output as before, e. they dont give you an actual list of parameters, tables and sensors that are available for specific vehicles. RPM Error: Get rid of the zero values in the Idle Proportional Airflow vs. In such cases, the light should go off by itself after a short time. Closed Loop Proportional Base vs. It's an a6 doing a ls3 conversion while installing cam.