Calculate hp from maf. so you can't calculate GMVE values from dynamic airflow.

Calculate hp from maf i only changed the maf voltage and i used all the timing changes from the intake, exhaust tune in the tune repository. Best car I ever had. This calculator allows you to choose between either of those two calculations. 2009 True Red - 2. Tuning a Mass Airflow (MAF) sensor using HP Tuners software requires a good understanding of the engine’s airflow characteristics and the ability to analyze the data collected during the tuning process. 8/0. 25 Supercharged Engine HP=MAF (g/s) *1. Your VVE shape changed and you really don't know if you made any good progress in your goal of sculpting the final shape. BSFC is defined as mass fuel flow divided by power. for MAF size changes and then to analyze logs to fine tune the MAF transfer function. The same data entry restrictions used above apply to the MAF calculator with the additional restriction that air density is in grams per cubic foot (g/CF) and must be greater than 0. Jeff Chambers, Owner Jun 17, 2008 · Brilliant. 1 Supercharged Dynojet WHP manual =MAF (g/s) *0. 5L - 375 WHP / 340 WTQ 2009 True Red - 2. 1 TQ @ 3701 RPMs witch seems to confirm the WHP numbers that I get using the g/s off the MAF readings. Click "Calculate HP & KW" to see: Horsepower per injector; Kilowatts per injector; Total estimated Jul 26, 2016 · "To get the cylinder airmass from the MAF flowrate, take the RPMs and divide them by 60. 136. 34 lb. You can calculate predicted power and torque, check lambda values, calculate turbocharger size, etc. min, 5300 ft. Not to worry I will help you to get a resolution to resolve the issue. Estimate Horsepower from Head Airflow Todays date is 3/11/2025 Calculate your HP From Head Air Flow. and t4mo bin. Jul 26, 2016 · "To get the cylinder airmass from the MAF flowrate, take the RPMs and divide them by 60. PNG Test 3: MAF S/S Air = 21g/s, Delay = 4s, Stepdown = 0. Going back to what I first said, LT1's seem to match up 1 gm/sec = 1 rwhp pretty closely Nov 27, 2009 · My AP "dyno" says 342. How to Use This Calculator: Enter your injector flow rate in CC/min or Lb/hr. 0L engine, for example, that only breathes 1. I did analysis from my dyno puls vs logs and I got very consistent results with this math (this is average from many cars): N/A and Turbo Engine HP= MAF (g/s) * 1. 25 Editor for quite a while and when I was tuning the MAF, I would copy the data from 2. This also takes into account any changes to the maf and the intake tract. HP is very dependant on torque (load) and engine speed. bhp = MAF x 1. the rest will be due to timing, more or less boost, different charge temps,turbo efficiency, yadda yadda. 25g of fuel for every 1. 7) to derive the total mass of fuel that has Oct 23, 2003 · Ross' example is a good way to check engine condition and potential torque as most MAF based motors depend on this reading as an actual reference to calculate predicted aircharge at the valve. You want to use brake specific fuel consumption to calculate power. HP varies on any dyno, to dyno. Sep 1, 2017 · To be clear I am only at 24-25 psi boost, MAF at 28. Useful Histogram Formulae MAF-based Dym_Air Calculation - Dym_Air_Calc = (MAF X 120) / (#_Cyl X RPM) MAF HP Tuners Dealer- VCM Suite (free 2hr training session Integrating MAF-based training into your regimen can fortify your aerobic foundation, refine running economy, and boost overall fitness. The reading is pretty damn close. Mar 3, 2009 · A good starting point for the MAF calibration is to measure the I. I've been using 2. Prior to this tool, using the HPT Editor, once you click Calculate Coefficients, it is game over. obviously MS contains the needed data fields and it knows the air mass when running speed/density. 0g of air taken in, creating 1 horsepower. Set the max duty cycle, typically between 80% and 85%. What I need now is some more data to refine the automation and test to see if it works well with different size MAFs and different setups. 8 (meaning MAF represented 80% of crank Calculate MAF: Use the formula to find the Mass Air Flow rate in pounds per minute. Its only the data output that is clipped. 37 seconds on a flat road at 70F with calm wind. 85 * 3000 * 350) / (2 * 6000 * 1728) = 0. An interesting point to note is that removing the MAF basically bypasses the whole system and directly sets the Final Airmass value to be the result of the SD lookup (it also disables things like knock learn and a Max Maf flow was 28. Mar 15, 2018 · in case you have boosted app (e. Load with Failed MAF (IMRC Open) vs. HP Tuners Ford Gen 1 Coyote Training (2011-2014) Course Part 17 focuses on the essentials you'll need to know with the MAF calibration process. 120 g/s divided by 0. 01. The actual HP is challenging (see my build). Sep 8, 2007 · Having said that 1 gm/second >< 1 hp in any LS1 vehicles I've seen. Multiply the RPS x 4 for a V8 to get the number of intake cycles. Here are some general steps you can take to tune a MAF using HP Tuners: Horsepower. To To determine MAF, we need to calculate the Volumetric Efficiency (VE) of the engine. Even then dyno's can lie with mistaken or purposeful number changes. Not a good way to calculate HP unless you have a comparison dyno load. That should put you in the ballpark. 25s Jun 17, 2008 · Brilliant. do the math . 8= 381. TPS: This table is used to determine the load when the MAF is failed with IMRC closed. The calculator is capable of giving you the quadratic coefficients including blowthrough, with the goal being to hasten/simplify the process of calibrating this model. Jun 20, 2009 · i have a 95 5. 00:00 - Now we already know that we're going to need to make some adjustments to our MAF scaling to account for our new OTR intake system, however, in the GM ECUs this is actually a little bit more complex, so before we actually jump into our MAF scaling we're going to talk about the system the GM PCM uses, and how that's applied, and hence, what changes we're going to need to make, and what Test 2: MAF S/S Air = 19g/s, Delay = 6s, Stepdown = 2. 160g/s or there abouts for a mapped A3 Sep 1, 2024 · The engine mass air flow (EMAF) is a critical parameter in determining the performance and efficiency of an internal combustion engine. This is derived from the quoted power output of the engine: max power 102 PS @ 4000 rpm. 44) Where HP is the total horsepower; CFM is the airflow in cubic feet per Oct 14, 2024 · Mass Air Flow Rate (MAF) Calculation. The total mass of air which flows through the engine (as measured by the MAF sensor or calculated using MAP, RPM and IAT) is divided by the A/F ratio (e. Nov 1, 2008 · Each time I hit 5200+ rpms and the MAF hz is above 11500, fuel is pulled and my afr goes to around 14. Do some research. I understand you are facing an issue with your MAF Service authorization. The following formula is used to estimate or convert CFM to HP. 25, both give the same result. This is adjusted so that the factory closed loop system trims are close to zero. 8, or multiply is by 1. Time from steady state TPS to start of Jun 24, 2015 · This is true, you can really see it when you are dialing in the MAF, if the MAF is off a little the load is off and the maf lbs/min will be skewed. 0, or 75%. Currently using excel to scale period and lbs. Airflow vs. This results in high Fuel Trim values. min is more accurate than PSI boost for estimating and tuning for HP because of the affect of baro pressure. There are a whole bunch of factors that can't be allowed for, but if anyone has a ballpark calculation I'd appreciate it. Why not use brake specific air consumption, defined as mass air flow divided by power, instead? Then the calculation is, essentially, Power = MAF/BSAC, which is much simpler and equally useless. Load with Failed MAF vs. The VCM also has the ability to calculate the incoming airflow and airmass by using speed density calculations involving the MAP, charge temperature and RPM. In stock form, the calibration of this sensor Oct 17, 2011 · Guys that tune VW, Chevy, Subaru uses MAF reading as reference before they actually go on dyno, why cant a silly Mazda guy. Apr 6, 2012 · The Maf sensor puts out a frequency based on the density of air (simply put. 24 tunes and then use the info from the scanner to paste special into that and then copy it from 2. Sep 8, 2007 · Using g/cyl and MAF lb/min to estimate HP or compare to other cars In the following thread, my g/cyl peak of 1. this is a 5-speed car,cbaza def. Enter the number of injectors in your engine. This simple calculator is one method to calculate VE. Aug 13, 2009 · here is the HPX maf transfer tool its just to get a starting maf curve depending on pipe diameters do not expect to calculate a perfect curve its just a tool to help you get started Attached Files HPXTOO~1. The MAF map is used to make adjustments to the MAF signal to the factory ECU. 5 lb/ min or right at 287 flywheel horsepower based on air flow. In a perfect world with 100% VE, this engine should consume approximately 102 gm/sec of air. 25 Editor and paste it into one of my older 2. 5/2. A MAF to HP calculator is a tool used to estimate the horsepower of an engine based on the mass air flow (MAF), air density, volumetric efficiency (VE), engine displacement, and RPM. 00:43: This is why it's so vital that the MAF sensor scaling is correct. Also 2 crank rotations are 1 fueling cycle (4 stroke) MAF=CYL*CAM*RPM/(2*60) CAM=120*MAF Oct 8, 2008 · >For this formula BHP is in horsepower and torque is in Nm >first way is commonly thought to be most accurate. Back to Calculators Index. If the new MAF is larger, increase the MAF table by that percentage. 1 day ago · The HP is based on flywheel HP, for rear wheel HP multiply the results by your drive train percentage loss and subtract it from the result. I imagine if you knew the max MAF reading on a standard ST you could work out a more accurate value for calculating Jul 29, 2013 · This can be converted to MPH based on the transmission gear ratios and tire size. With all of that being said, apparently modern MAF systems are starting to improve dramatically. Aug 17, 2012 · S4 (B8 Platform) Discussion - Calculating HP from Air Mass - Seems that a lot of reports indicate that the base HP in the B8 S4 is more than the 333 advertised and that the real reading is 360-370 From past models HP could generally be calculated by dividing the MAF reading by 0. 1 N/A and Turbo Dynojet WHP manual= MAF (g/s) * 1. 19hp A MAF to HP calculator is a tool used to estimate the horsepower of an engine based on the mass air flow (MAF), air density, volumetric efficiency (VE), engine displacement, and RPM. You have to tune through the entire frequency range based on your desired AFR and the difference in your WB values. I am trying to calibrate the MAF sensor but I am having a strange issue. Which would roughly be 340 hp at the crank. Select the BSFC value based on your fuel type and engine setup. 25, as the engine aims to burn 1. Jun 4, 2024 · Hp is the horsepower ; Lbs/Min is the pounds per minute ; CF is the conversion factor (0. I'm running 46 pph injectors at 91% duty cycle From the injector formula I get 310 flywheel hp. Oct 15, 2013 · CAM can have two forms, one for MAF, and one for VE, let's do MAF as it's simpler first Also remember MAF is a total airflow, so you gotta convert from single cylinder airmass to total, and converting RPM (per minute) to per seconds, so the units agree. Horsepower is a unit of measurement of power developed by engineer James Watt in the late 18 th century. the maf is slightly bigger. More like 5-10. What is Lbs/Min to Hp? Lbs/Min to Hp is a conversion used to determine the horsepower from a given rate of pounds per minute. D. Input Head CFM, Please Oct 17, 2010 · to convert MAF readings into approximate BHP figures divide the g/s value by 0. In the majority of factory cars, a MAF sensor is used to tell the ECU what mass of air is entering the engine. Oct 30, 2013 · Once we have MAF integrated over time, we can calculate fuel flow using a specific air/fuel mixing ratio (A/F). Jul 28, 2024 · I am trying to tune my friends coyote mustang that just has a cold air intake and longtube headers on it through HP Tuners with the MPVI3. 25 or bhp = MAF / 0. Diesel and Turbo charged engines could result with higher than 90% efficiency if in good shape. g 2011 coyote with 650whp) and u are facing lean scenario at top RPM and according to maf table you have only top 2-3 cell to adjust short trim and even after adjust these cell you still have lean . 24 scanner as well. 00:49 Mar 3, 2009 · A good starting point for the MAF calibration is to measure the I. If you know the air flow you can calculate the horsepower and vice versa. Dividing the flowrate of the MAF by the number of intake cycles gives the cylinder airmass. In other words with e85 you can make more power with the same amount of air. 5 but not double or triple the HP. My question though is how can i calculate the offset tables for these injectors without just inputting different numbers and correcting fuel everytime? May 13, 2022 · The problem with using MAF lb/min to calculate HP is that the MAF maxes @ 86lb/min even though it may have plenty of ceiling in HZ. On the left you have original values and on the right new (choosen) values, so that you can make direct comparisson. I read that using MAF lb. 1104\] Estimating horsepower by air flow If you have access to a flow bench, you can measure how much air flow you get through your intake and cylinder head. It is showing a big drop in calculated cylinder air, which leads me to believe that it is no longer using the MAF table to calculate fueling. I know if it stays rich that means the numbers in the table are too high and lean means too low. i have purchased the quarterhorse along with EA AND BE. >shamelessly stolen from RS246. AEM Infinity Live Training: High Comp ITB K24 Honda EP3 Part 5 walks you through dialing in full throttle fuel, spark, variable cam control, and knock control for low cam / non-vtec conditions using an Alpha-N strategy. Oct 17, 2020 · Dynamic air exists to correct that inaccuracy during a transition - but it requires the MAF and VVE to be steady-state accurate already. I have setup a custom Math's parameter for HP in HPt using the PID 50408 x 50070 / 5252. The calculations assumes the necessary modifications for ambient condition through the use of IAT and MAF. 090 lb/min Aug 7, 2024 · CC to HP Calculator; HP to Torque Calculator; Boost to HP Calculator; Horsepower Quarter Mile Calculator; Hydraulic Motor Flow Calculator; Engine Intake Diameter Calculator; CFM To HP Formula . /min. With the VE tables, you have to multiply the cylinder volume by the VE. When I ran a S4 maf I hit 305g/s peak. g. for the maf transfer i just split the difference betweet the stock tune and a jlt Once the mass air flow is known, the engine electronic control unit (ECU) can calculate the amount of fuel to add to achieve a pre-determined air/fuel mixing ratio. jpg So how can I log air flow if I don't have a MAF sensor. air mass) and you insert the G/sec value at that frequency cell which gets your fueling to your desired air fuel ratio. Then, you can calculate HP, or relative HP. 24 Editor back into 2. Our MAF Heart Rate Calculator is a valuable tool for runners, cyclists, and endurance athletes at all Mar 8, 2010 · Just google MAF to HP and you’ll get a boat load of people who uses these formula. This calculator is particularly useful for automotive enthusiasts and professionals who want to understand the performance characteristics of an engine. Remember that the MAF sensor scaling is used by the ECU to calculate engine load, and engine load is used as an input for jut about everything the ECU does, including fuel delivery, ignition timing, and boost control. 0, 75mm TB, 88mm slot MAF, 34lbs injectors, BBK shorties, 5spd converted to 4R70W with Baumann controller, 9" rear w/3. 5L of air every two crankshaft rotations, is breathing at a ratio of 1. 0 KB, 476 views) May 13, 2007 · But you can indeed go the other way and estimate HP from MAF readings if the MAF is working correctly and you have stock engine managment. My MAF reads 5XXCFM @11500 of air, so once I flow that much air wI am maxed and have to tune via the PE table. 2 days ago · HP Hire Purchase Calculator. Dec 16, 2009 · But GENERALLY speaking MAF V (not the "extrapolated MAF g") somewhat correlates to HP. PNG Test 4: MAF S/S Air = 19g/s, Delay = 1s, Stepdown = 0. 001. The real engine breathing volume to displacement ratio is called VE. This information is crucial for \[Air\ flow\ (CFM) = (Horsepower \times 0. Explanation. I'm down to a best time of 4. 8 is rough calculation of WHP. Sep 25, 2013 · Using Group 2 - field 3 in the measuring blocks in VCDS (Mass Air Flow Sensor (G70))in g/s Not to get too technical, but our cars give a MAF reading in grams per second of air flowing through the intake and as a rule of thumb you can calculate bhp from this reading using either of the following calculations. MAF and VVE air estimation are the starting point in the calculation which dynamic then modifies during transientsso you can't calculate GMVE values from dynamic airflow. Jul 25, 2023 · Read online that horsepower can be fairly accurately calculated by multiplying the MAF g/s reading by 1. co/offery147🦵Kickstart your EFI Tuning knowledge. This gives RPS. . Aug 11, 2019 · Mass Air Flow is calculated thus: Mass Air Flow. Our generated table is shown as load. i entered all the # in maf1 starting on second line then had it convert it to proper length 30pt 🔵 Building a fast car? Get $400 OFF the all-inclusive VIP online course package deal: https://hpcdmy. Apr 4, 2007 · At no stage does the MAF get ignored completely in these calcs (the dominating terms of the main filter calc are always MAF based). is it ok to re scale the period to have enough frequency or swap to after market MAF. Modified by modulation at 3:20 PM 5-13-2007 Apr 11, 2023 · How to tune maf hp tuners. My estimate of 30 psi is what it would take to achieve 34 lb. Nov 16, 2011 · That will skew your actual power output vs Maf reading. A 300 ZX MAF with that thing would make about 650-700 HP a Cobra MAF at that thing would make about 700 WHP as the inner bore size is where the problem is and not the voltage. XLS (32. 8 gives 150bhp for a standard A3. 25s Jul 3, 2015 · In other works, the data value of the PID is clipped at 86. It gives you fairly accurate HP reading if your VT tables are close. Possible causes include: A failed MAF sensor (including the MAF connector and related circuits) 87mm will not flow what a 100mm will flow. Time from steady state TPS to start of oscillations = Ages 1. i donno if i did my car the correct way last night, but it runs like a scalded dog compared to the night before. Oct 5, 2018 · The GM ECU can register airflow (airmass) from the mass airflow sensor or it can calculate the airmass from the manifold pressure sensor. Time from steady state TPS to start of oscillations = 6s 1. But when i used the same table on the 60s it was running rich even after correcting the MAF. This map should only be necessary if you've fitted a different MAF sensor or modified the intake track so that the stock MAF calibration is now inaccurate. I'm sending a private message to assist you with the next action. But saying your IAT change nets you 27whp all by itself is not correct. From this figure, you can calculate horsepower. 305/. MAF, BARO, air temp, RPM, and engine displacement will get you VE and theoretical load. Although its original purpose was to compare the output of steam engines with the power of horses (hence its name), it has since been adopted as a unit of measurement for all sorts of engines used to power things such as vehicles, lawn mowers, boats, chainsaws, and airplanes. As you improve, reassessing your MAF heart rate ensures your training remains effective and challenging. A/F can range from 6 to 22. 9 CHP @ 5814 RPMs and 359. 25 CRANK HP*. This calculator provides the calculation of mass air flow rate (MAF) for engine tuning applications. , 14. Performer 5. A fake breathing fault means that the MAF reports lower than actual airflow. There does seem to be a rough correlation between 1 lb/hr = 10 rwhp but I wouldn't take it as more than a very rough estimate. I HAVE A PMAS METER THAT I HAVE THE FLOW SHEET. com >Matt I was wondering if the 0. If a Mass Airflow Meter (MAF) is fitted, the airflow is measured directly by the MAF and converted to airmass (g/cyl) using RPM and the number of cylinders in the engine. min at 5300 ft. RPM vs. However, if I convert to the LS6 MAF I could effectively flow 980cfm @ 11500 of air. Example: Suppose you have a naturally aspirated engine with a Volumetric Efficiency (VE) of 0. My car is in an '08 LS3 Vette with headers, exhaust, ported intake/TB, K&N, fresh air scoop. 0L - 300 WHP / 275 WTQ - Exploded May 8, 2015 · I still use 2. This way the maf models the engine flow and characteristics. It only works the other way around. If I change out my MAF to a LS6 below would be my logic. This calculator is based on Naturally Aspirated applications. When I was data logging my car, dialing in a Magnuson blower my lb/min were intially 78 and by the time the car was dialed in, load calculations and short term fueling were correct the lb/min was 68 Mar 1, 2017 · This calculator is quite sophisticated, so an understanding of the process is vital to help get the best results from the calculator. 625) \times 1. There are many ways to perform VE test with numerous calculators available on the web. 0 was questioned as being wrong, as it was higher than their 480rwhp f-body. It measures the amount of air entering the engine, which directly affects the engine’s fuel-air mixture, combustion efficiency, and overall power output. TPS: This table is used to determine the load when the MAF is failed with IMRC open. Jan 13, 2025 · Been working on a way to automate MAF tuning (Gen3 Coyote). The MAF fail is set to 14000hz, and I bumped up all the VE cells in the higher rpm/kpa ranges (set to Feb 13, 2024 · I know there's a way to roughly calculate BHP (or WHP?) from the peak MAF g/s reading but I'm struggling to find what would be the appropriate calculation for an FSTi. May 20, 2011 · 85GT, 302 w/Dart Windsor Jr heads, Crane 2030 equiv. In WOT, it will be your PE value. Jan 29, 2007 · This thing will work on larger MAFs like the 300ZX MAF and the Cobra MAF at maybe 1. 69 #/min but the MAF will continue to register and the PCM continue to calculate above this clip. 15(drivetrain loss) = 57. 85, an RPM of 3000, and a Displacement Volume (VD) of 350 cubic inches. The HP estimate would be your Crank HP. 25 CRANK HP now lets assume 15% drivetraing loss for my FWD GTI 381. My suspicion is that I'm making close to 300 flywheel hp at 14 psi And yes, I do need larger injectors. But relative HP increases is what you are after anyway as you mod. To calculate the Mass Air Flow (MAF): MAF = (0. HP = (CFM * 1. Jul 28, 2023 · Welcome to the HP Support Community . MAF set ups have also been known to not work very well under high strain (7000k+ RPM) so for a tuner that is tuning a car for drag racing or anything that would require high load's a MAP system is more reliable. 8 value would be different on Ford's than VAG cars. i have fuel pressure at 55 and base timing at 10%. 0 sc (v1-10#boost) tfs stage 3 cnc also stage 3 cam,tfs upper and lower (R)CNC ,75t,b. Get Jun 4, 2024 · Hp is the horsepower ; Lbs/Min is the pounds per minute ; CF is the conversion factor (0. We learn about the MAF sensor functionality in the fuel / airflow model and how to change the MAF calibration table to represent the intake installed on the engine. 25. Use our HP (Hire Purchase) calculator to get a full breakdown of your HP deal. 95 The amount of air flow required is directly related to the amount of horsepower generated. '02 WRX 4EAT, 311,000KMs/194,500Miles, Sold. 8 Feb 2, 2005 · I max the MAF after 5PSI and I am having a hard time tuning via the PE table. We will calculate your payments, total costs, total interest charged and provide a schedule of payments detailing each month of the contract to show you the remaining balance at each payment. 000434) To calculate the horsepower, multiply the pounds per minute by the conversion factor. and what is the maximum power VE = volumetric efficiency: CFM = engine air flow rate - cubic feet per minute: CID = engine displacement, size or volume - cubic inches: RPM = engine speed - revolutions per minute The HP is based on flywheel HP, for rear wheel HP multiply the results by your drive train percentage loss and subtract it from the result. Estimate Horsepower from Head Airflow Todays date is 3/20/2025 Calculate your HP From Head Air Flow. MAF Temp Compensation vs. Dec 11, 2004 · Theory here When the MAf is diconnected the PCM uses the ve table to figure out dynamic airflow, could you log RAW MAF frequency and then derive a table from the dynamic cylinder air pid (in g/sec). of both the original and new piping at the MAF. IAT: This table is used to compensate the MAF for temperature. Calculate the cross-sectional area and the percentage difference. A 2. Calculation Example: The mass air flow rate (MAF) is a critical parameter in engine tuning as it determines the amount of air that is supplied to the engine. The PCM applies a low fuel injector command to correspond to low sensed airflow, so the actual air/fuel ration is too lean. gjzbsz tie yewyp vufc uhvc budro sxkja qdob tol rbfg wjika qcy yfptpmq afcyodx dpn