Dynojet std vs sae. Two inertial and two eddy-current.

Dynojet std vs sae Jan 23, 2023 · How's it calculated? The Society of Automotive Engineers (SAE) created the SAE J1349 JUN90 standard method for correcting horsepower and torque readings so that they will seem as if the readings had all been taken at the same "standard" test cell where the air pressure, humidity and air temperature are held constant. Anyways my max hp is 457. I haven’t seen the STD or EEC correction formulas, but the EEC gives a very similar result to the SAE system which I usually use. Sep 24, 2009 · Does anyone know the difference when your talking about a dyno jet? any help would be great, this is a very confusing topic. If it's a cold day, low elevation and high pressure ask for uncorrected smoothing "0" to see a high number. The time now is . The SAE paper says 99 kPa. EFI Tuning 53 Dynojet H-D Power Vision PV-1 PV-2 PV-3B Dynojet Power Vision PV3 Harley Davidson Browse all sections Jun 7, 2011 · In fact, SAE requires that the corrections be less than ± 7%. Oct 9, 2025 · SAE J2723 (Certified advertised power procedure). A standard day is 29. Dyno Dynamics same car, same day This is one reason why DynoJet dynos gained a great deal of market share initially and why we’ve always relied upon the data as it can be easily replicated on other DynoJet dynos. 5°C). I just thought there could be some clarification on this subject. Standard? Apr 6, 2003 · Just to keep the topic going, I found a user over on ls1tech that talked about an article in a f-body magazine which seems to coincide with your findings "This is from a magazine article on "dynojet" dynos. Hotrod took a brand new 4. So all else being equal, SAE will yield about 4% lower numbers than STD, but SAE is the standard of the OEMs. 0 Likes The Premier Kawasaki ZX-10R Community Forum and Resource Mar 26, 2003 · The latest Dynojet WinPEP software will convert a dynojet file to SAE, STD, DIN, etc. It won't make the charts look any smoother or jagged. Come on, you know this right? :lol: Jul 31, 2008 · All that said, regardless of the Dyno used, when the proper correction factor is put in for the proper standard, in our case to SAE J245, the HP should be the same if you run it on a DynoJet or Superflow. Because the reference The STD correction factor, used primarily in older North American dyno results, uses different atmospheric conditions compared to the SAE standard. 5 PSI), 91 Octane, SAE Correction Here are the ESS-46 vs. I'd run a couple files through at SAE and STD and see if there is a fixed delta between the two. Why then is DynoJet using 29. Dyno libraries from other web sites reveal that both SAE and STD are used by contributors (ref; Wood Auto, Horsepower Inc. So in the example above we would not be allowed to use the STD or standard J607 SAE factor of 1. Each one figures in temperature, humidity, and barometric pressure a little differently. The chart for the Dynojet had to be converted to SAE because it was original printed using STD correction. SAE j1349 correction: 29. Jun 19, 2004 · Last dynojet Aug 02 248c SAE 369whp/354ft-lbs at 10. Mar 7, 2009 · SAE vs Dynojet dynamometer Started by Fast4fun, March 07, 2009, 01:42:17 PM 0 Members and 1 Guest are viewing this topic. :willy: I did a little research and found a good read: There are few standards used in the dyno world Sep 13, 2011 · In fact, SAE, due to the higher and more realistic standard temperature and absolute pressure factors will normally read 4-percent lower than a dyno graph printed in STD. These correction factors are used by dyno shops to correct for nonstandard temperature, barometric pressure and humidity. 5psi, 1/4mile 12. Feb 13, 2013 · SAE is with no correction factor, That is the actual HP it made with the given conditions on that day. , the temperature 77° F and the humidity zero. 2. STD on the dyno - What is the difference in SAE and STD as measured on a dynamometer? Which one do you use to compare rwhp and rwt numbers with others? Thanks, Clayton from Las Vegas :flag: 3 days ago · I'm sure this has been addressed on the site many times but I'm too lazy to look for it! On dyno sheets, what's the difference between SAE Smoothing and STD Smoothing? This calculator converts your dyno run into corrected SAE, MSA and STD horsepower. 2. 0. STD is what the car actually makes on that day with all the current conditions. “Sea Level Standards” would follow the same arithmetic manipulations for a correction to conditions of 29. 23”Hg, 77degF, Dry Air. Our fuel management and diagnostic products, coupled with our Apr 29, 2004 · On a Dynojet, what's the difference between SAE, Standard etc. Jun 12, 2013 · The dynamometer is the handiest tool in your toolbox - it can assist you in diagnosing many issues along with providing the real-world horsepower and torque figures your car puts to the ground. 3 whipple tuned today and the #'s were 592HP & 549TQ @ 17lbs, and the tuner changed from I believe SAE to STD and the same runs #'s went to 604HP & 560TQ. SAE, with a stated correction factor, on a Dynojet Chasis dyno is the way to go. Thank you Bobby! Dyno Testing Variables SAE, STD, ECT, IAT, KNOCK, WHEELS, RPM Why Horsepower Is What It Is DYNOJET Jay's Tech Tips #49: How To Read Dyno Graphs. May 13, 2002 · Engine Mods - Dynojet vs. May 2, 2010 · 1. SAE. This would put SAE correction in the high 400s. Mar 15, 2013 · Blog - The Dyno Dilemma - SAE vs. vs. 3 kPa) of dry air and 60 F (15. 0 Likes (Note: Im taking the pre-referenced correction from your graph 1. I honestly couldn't tell you which would generally produce higher numbers, but I suspect the Standard numbers would in many cases - especially at low altitudes. :willy: I did a little research and found a good read: There are few standards « Previous Thread Next Thread » Dnyojet vs. DynoJet is using 29. Dynojet version of STD correction does perform humidity correction based on J607 formula. (Explained) Our question of the week this week is, what is a dyno correction factor?If you have ever had your car tuned, or if you have ever wanted to know how much powe Jan 10, 2016 · @3point8Performance 2014 3. is the world leader in the development and manufacturing of performance enhancement products and tools. So the conversation moved on to SAE numbers vs. This is a base run of a 2006 Z06 with just over 500 miles on it. Correction factor is zero of course uncorrected. DynojetAll times are GMT -5. STD is what it should make in ideal situations and all dynos of the same brand should be the same for this number This calculator converts your dyno run into corrected SAE, MSA and STD horsepower. I don't think you can convert the number from STD to SAE unless you are at the dyno. Posted in Reference If you are curious as to the comparison of jet sizes between different brands of carb jets, the chart below should give some guidance. SAE and STD are US standards, whereas DIN and EEC are European, and JIS is Japanese. Oct 7, 2001 · I had them copy my runs for the last 3 years onto a diskette and then download the Dynojet viewer software free off dynojet's website. 77 degree temp 0 percent humidity Standard correction: 29. I just got my cobra with my 2. Being that this is an apples to apples comparison because of the same correction factors being used, it makes sense to see a 13% drive train loss, which is in the range of what would be expected for a non-IRS stick car. So, I go to my conversion tables. 3% higher. Aug 9, 2007 · I have WinPep 7 on my laptop which is the software that is used for a DynoJet. 1005 because it is correcting by more than 10%, however the SAE J1349 factor of 1. 234 in-Hg (99 KPa). The operator told me the SAE numbers when I asked. Well, when I went to school we didn't talk in kPa. Mar 13, 2005 · The current version of DynoJet Runviewer 7. Nov 24, 2014 · In this video we show you how to setup the NEW DynoWare RT electronics and Power Core software for your Dynojet dynamometer. Oct 30, 2013 · If you've ever wondered about SAE vs. Unfortunately, these are the only Dynojet graphs I have of the RS-46 stroker on this same dyno. 8 R-Spec - Tuned by AlphaSpeed 352HP/312TQ (Dynomite) 336HP/298TQ (Dynojet STD) 330HP/292TQ (Dynojet SAE) 3p8p Stage 3 intake manifolds, 3p8p manifold riser, 3p8p true CAI, J2 Headers, Coolerworx true STS Reply Quote Like ScarlettGen Discussion starter 87 posts · Joined 2014 S65 n/a Dyno Results - Mustang vs. J607 specification formula does not perform humidity correction. Mark Dodge verdict Dec 23, 2013 · The last Dynojet was four years after the first Mustang Dyno. Rear wheel HP = 654, for a 13% drive train loss. 23 InHg (99 kPa) of dry air and 77 F (25°C). Dyno Correction Factors SAE vs STD Understanding Dyno Correction Factors and Their Impact on Performance Numbers When evaluating engine performance using a dynamometer (dyno), it’s essential to understand the role of dyno correction factors. The conditions were around 73 degrees, though, so the Uncorrected value is very close to SAE, as it should be. Next time you are on the dyno insist for SAE corrected numbers. , and others). 92 InHg (103. STD Dyno Numbers According to this information the Mustang dyno (using SAE only) will always read lower than another brand Dyno using STD (it has the option to use SAE) and that the standard formula to compare a STD dyno sheet to SAE is -4. Will Post sheets tomorrow!!! May 13, 2011 · SAE and STD just refer to different reference conditions (temp, baro, humidity) used to correct measured power numbers. they assume a ME of 100%). It still makes no difference what you use as long as you are consistent. , Headquarters, T-man perf. Dyno control/software (corrections, smoothing): Dynojet PowerCore documentation; Mustang Dyno control manual. « Previous Thread Next Thread » SAE vs STD dyno correction factor? Feb 15, 2007 · C6 Tech/Performance - Mustang Dynos vs. Stock comparison dyno charts. The older J607 standard considers that the engine was run on a 60°F day with 0% humidity and a barometric pressure of 29. The Dynojet software gives 4 correction options – SAE, STD, EEC and DIN. 8% Dyno correction factors; SAE vs STD correctionWe had Bobby Wood reissue the original WM8-408 cam for M8 for us. 23 in/hg. 41 with std correction and smoothing of 1. 31 BP 77 degrees. May 15, 2005 · For example, if you run your vehicle on a Dynojet dyno and the setting is at "STD" the dyno number will appear much higher than when set at the "SAE" setting. I can't help but notice that the Mustang magazines certainly like to use Standard vs. The number the shop reported out to me was SAE correction factor and smoothing of 3. 99 in-hg 70% humidity. Dec 25, 2006 · C5 Tech - SAE vs. Jul 22, 2009 · C6 Tech/Performance - Dyno Sheets - SAE vs. vs STD Dyno numbers so I thought this would help. One of our all time favorite grinds for big broad power with our big bore kits. Correcting to SAE J1349 alters the data to make it seem as if it was taken when the atmospheric pressure was 29. May 23, 2013 · Between the Mustang Dyno and the Dynojet an MAFia was added, long-tube headers were added and the car was retuned to get rid of the rich condition. Mar 26, 2003 · Does anyone have a formula for converting STD to SAE numbers ? Does my dyno shop have to convert this with their software? Tried the search, but couldn't find anything. Based on corrections i've seen applied to my charts over the years, 4% sounds like a really good number. 24 is pretty high. STD or STP. I get 99 kPa is equal to 29. Run on a different dyno (Mustang vs. Most people know that showing STD numbers read higher but not many know why. Feb 6, 2025 · Dyno Correction Factor Calculator This Correction Factor Calculator determines the dyno correction factor which is to be multiplied by the actual dyno data in order to correct for the effects of temperature, barometric pressure, humidity, and altitude. 02) STD is the correction factor on the Dynojet that shows the highest HP out of all the correction factors. While an inertia style dyno is very repetitive across the product line that doesn't account for the inflation baked into their numbers. My stock pulls were around the 279-280 whp mark SAE - the key to comparing apples to apples with a Dynojet is to use the SAE correction factor. 25-6. Dynojet) and expect different numbers even before correction (STD vs SAE). For this article, understand that these correction factors will give results that are different from each other, with SAE J1349 typically about 4% lower than SAE J607. 92 in/hg. Apr 24, 2015 · SAE: "SAE (Society of Automotive Engineers), USA. SAE represents more realistic standard conditions, STD artificially boosts numbers. With an SAE correction factor applied and a like model DynoJet being used, results from the same car at different dyno locations are usually within 1-percent. 68 degree temp 0 percent humidity What this all means is that "Standard" will give you I wish everyones SAE numbers were more standardized rather than still being inflated. Often, "Standard" is a tuner's sales tool--customers prefer higher #s for bragging rights. ? I was given 2 graphs on my most recent LS1 Edit, SAE and Standard. I dont have the TT anymore - it was a DSG 3. 03 CF in SAE 1. STD: STD is Another power correction standard determined by the SAE. along with your 95 degrees and 90% humidity your would need a barometric pressure of about 27. 0 PSI), 91 Octane, SAE Correction Higher Boost (6. Apr 25, 2007 · I'm simply saying that if you dyno a given car, on a dynojet, and at first do uncorrected and then do SAE smoothing whatever it won't always be 30 hp difference between the two. if my car makes 225whp on a dyno jet when it says smoothing 5 what will it make when its sae corrected? any help would be great thanks! Use Station Pressure reading and not the 'corrected' barometer reading. , Hemi-designs, Revolution Perf. " Standard (STD) Correction: (Note: Im taking the pre-referenced correction from your graph 1. Ask the dyno operator to print both. 6@116mph New Sept 02 Head work and exhaust porting, April 04:UUC Pulleys, Turbo to intercooler pipe 2. Mar 20, 2010 · What is (are) the difference (s) between the STD Correction Factor & the SAE Correction Factor? Does one dyno higher or lower RWHP & RWTQ #'s on a Dynojet Dyno? How about on other types of dynos? Oct 16, 2003 · I had the pleasure of meeting up with a Dynojet employee this past weekend while I was in Las Vegas at the Off Road Expo trade show. This standard has been stable for a long time and is widely used in the performance industry. 22 in hg? It is a small difference but it will affect the HP numbers. Of the 4, STD gives the highest readings by far with DIN not too far behind. The standard atmospheric conditions for STD are: « Previous Thread Next Thread » Dyno Correction Factor Calculator (online) Oct 19, 2006 · I also called Dynojet and they confirmed no such thing exists. I can show all of the other forms, STD, Uncorrected, etc. They SAE numbers were virtually identical but the STD numbers from the Dynojet were 3. 5" Aug 04 3. 0 Likes Mar 14, 2002 · SAE is about as close as it comes to being able to benchmark and compare between cars. SAE corrects to a lower temperature than STD. I've also thrown in an Uncorrected setting. Power is corrected to reference conditions of 29. Since my pre-tune dyno pull was SAE, I am going by the post-tune SAE numbers. 5 PSI), 91 Octane, STD Correction Higher Boost (6. Nov 11, 2005 · "SAE standard J1349 Rev JUN90 is the one that appies to gasoline engines in light vehicles. 1 gives STD as being just a bit over 2% more than SAE. 56% Low Boost (6. 92 in-Hg or the newer SAE J1349 standard of 77°F (25°C) day with 0% humidity and a barometric pressure of 29. 77 degrees 24. Check it out here! May 8, 2022 · Mustang dyno vs Dyno Jet - CAMARO6 Mustang dyno vs Dyno Jet ZL1 Discussions Some Thoughts on Dynamometer Correction Factors and Corrected Horsepower What these conditions correct to for today’s SAE correction (J1349) in English Engineering Units is that the correction conditions would be for 29. 5psi Feb 17, 2011 · STD is Another power correction standard determined by the SAE. The two most common standards are SAE J1349 and SAE J607 (sometimes known as “STD” on some dynos). Jun 27, 2007 · STD -- The STD (also called STP) standard is another power correction standard determined by the SAE. Most tuners go by or should go by the "SAE" setting on the Dynojet software in order for the numbers to appear the most accurate. EPA 40 CFR Part 1065/1066 (engine vs chassis test frameworks; engine mapping on dyno). STD on the dyno - What is the difference in SAE and STD as measured on a dynamometer? Which one do you use to compare rwhp and rwt numbers with others? Thanks, Clayton from Las Vegas :flag: Jun 15, 2018 · Standard correction factor is still a number that has adjustments made to the final number, just a bit more optimistic values are used versus the SAE factor, which is the industry standard used by the manufactures nowadays Oct 6, 2008 · It seems like most STD dyno sheets I see show higher numbers than SAE. RS-46 vs. Apr 8, 2002 · "Standard" dyno settings yield higher #s than SAE. DynoJet can gain as much as 8 peak HP by using smoothing "0" compared to smoothing "5". 5"HFM,11. Is it just a different spot were a sensor reads? I The Dynojet software gives 4 correction options – SAE, STD, EEC and DIN. I have taken the same dyno sheet and have converted from sae to uncorrected to standard for your viewing pleasure. 0634 could just barely be used. My next article will discuss the differences between dyno's, specifically the Mustang Dyno . Mar 20, 2001 · The correction factor is calculated using Barometric pressure, temperature, and humidity. The Standard numbers are 10 RWHP and 10 RWTQ higher. Dyno: SAE vs STD CorrectionBMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Powertrain and Drivetrain Discussions > N54 Turbo Engine / Drivetrain / Exhaust Modifications - 335i > Dyno: SAE vs STD Correction View Poll Results: SAE or STD Correction for Dyno SAE 8 44. I did a little research and found a good read: Oct 24, 2006 · The use of STD/5th gear is in response to an industry trend towards this. We go over and discuss each application that's in the all new Power Core Software Suite. This SAE standard requires a correction for friction torque. Mustang? - What is the differences between the Dynojet and a Mustang dyno? Would you expect different numbers with one vs the other? Apr 4, 2006 · The most common are the SAE standards. Identifying Your Correction Factorynojet:If you look at a dynojet graph in the upper right corner, you will see where it says the correction method being used. (Note: Im taking the pre-referenced correction from your graph 1. On a Dynojet Inertia chassis dyno using SAE J607/SAE STD correction factor. Dynojets - It has been my understanding that Mustang Dynos tend to show lower numbers than Dynojets. Identifying Your Correction Factor: Dynojet: Notes: + : J607 with Humidity Correction. Note that different manufacturers sometimes use different profiles for the jet passage which can effect flow. 44% STD 10 55. Thanks doc Apr 28, 2002 · I discovered something else. Dyno correction calculator Correct your engine's power output for different atmospheric conditions using our easy-to-use calculator. We use SAE consistently, always have since its pretty much the accepted method to show your data. Because SAE net is so common, this is the standard we will use to compare all others. Another power correction standard determined by the SAE. Two inertial and two eddy-current. These calculations are derived from SAE J1349 Revision AUG2004. May 17, 2012 · A lot of people have been asking about SAE . . But the problem w/ STD is that there seems to be too many different sets of reference conditions out there. Apr 2, 2016 · Dynojet to dynojet, what comes into play when people mention a "happy" Dyno even if it's taken as SAE? I know mustang dynos have a different configuration which typically shows a lower number (heart-breaker) due being load bearing. If this is true what is the difference in percentage? 10% lower? 15% lower? Also why do they show different numbers? Shouldn't they be close? Nov 19, 2025 · Dynojet’s latest software package (WINPEP7) offers the following correction factors: SAE, STD, DIN, EEC, JIS, and UNCORRECTED. Apr 27, 2010 · What is the difference between Dyno #'s of SAE vs STD. Dynojet Jan 24, 2013 · I was looking through some dyno sheets and noticed that some shops use SAE correction values on the Dynojet while other use the the STD correction values. 92”Hg, 60degF, Dry Air and the Nov 18, 2004 · Should the scaling on the Dynojet be set on SAE or STD? This can be enough difference to make a car illegal. Dyno correction factors; SAE vs STD correction Rogério Santos and 294 others 󰍸 295 󰤦 84 Last viewed on: May 28, 2025 (Note: Im taking the pre-referenced correction from your graph 1. 22 in hg as the new SAE standard baro pressure. Feb 7, 2021 · C6 Tech/Performance - Dyno Sheets - SAE vs. We cannot compare STD vs SAE. Apr 8, 2010 · :yup:Well had my V on my original baseline dyno today when it was stock last year SAE Smoothing 5 STD Smoothing 5 May 09 338 rwtq 338 rwhp 345 rwtq 345 rwhp April 10 367 rwtq 365 rwhp 376 rwtq 373 rwhp Added TPiS Headers, Cats, Tune, Drop-in K&N, Ported TB since May 09 Big difference between STD Smoothing 5 and SAE Smoothing 5. 0 Likes Jun 13, 2011 · 1. The STD, uncorrected and SAE numbers in my signature are from the exact same pull. Jan 28, 2013 · Dyno Compilation - dyno testing results and recommendations Engine, Exhaust, Transmission Jul 6, 2005 · Both SAE net and SAE gross horsepower test procedures are documented in Society of Automotive Engineers standard J1349. STD Correction - I was looking through some dyno sheets and noticed that some shops use SAE correction values on the Dynojet while other use the the STD correction values. In a nut shell it sells dyno's. A correction factor of 1. STD numbers simply help boost the shop's ego and make you think your car makes more power than it actually does. Ford uses SAE J1349 to rate our engines which is 29. Aug 15, 2010 · Additionally, they used STD correction instead of the more common and easily comparable SAE correction. Jan 24, 2004 · SAE uses a standard for temp, humidity, altitude, etc. May 20, 2018 · Most people know that showing STD numbers read higher but not many know why. Conditions were: 84. May 9, 2017 · 2017 ZL1 Bone Stock Dyno Runs Anyone? ZL1 Discussions Aug 14, 2012 · Don't forget there are no 'actual' dyno numbers as they all read using different methods, for example inertia and loaded. the "rest" and here is what I learned: In the US the Society of Automotive Engineers (SAE) has developed a May 13, 2006 · STD and STP generally come out with about 4 % higher numbers than SAE since the temperature in the standard is lower in STD than in SAE. Dynojet Research, Inc. So when comparing to others all factors are the same. 51 and max torque is 507. 2347 in hg. 92 BP 60 degrees and zero humidity for SAE J816 and J607. Nov 22, 2011 · Thanks to our friends at the Society of Automotive Engineers (SAE), most dyno results follow a standard procedure and almost all of them end up being "corrected" to a standard known as SAE J1349. Also the ECE standard is the same as the SAE J1349, but does not use mechanical efficiency in the Sep 14, 2003 · Some dynamometer systems use the SAE correction factor for atmospheric conditions but do not take mechanical efficiency into consideration at all (i. Loss mechanics (gear/hypoid/bearing efficiency; why percent loss is a myth). e. STD settings on a dyno chart, here you go. We show you how to configure your WinPEP 8 Dyno Control software before making a run and how you read the information from a dyno run using the WinPEP 8 Data Center. Mikuni - Keihin - Dynojet Conversion Chart Written by Makotosun . Air density is affected by the temperature, pressure and humidity of the air Notes: + : J607 with Humidity Correction. Can someone explain the differences in SAE vs. 05 CF in STD. 6L SOHC Mustang to four dynos. Is there a reason that some performance shops would use STD over SAE (besides to show higher numbers) if SAE seems to be a common standard? C5 Tech - SAE vs. 1. 3. DynoJet has become the "standard" even though it's technically not "standard". SAE Oct 17, 2012 · A car making 672RWHP STD correction would be making 645RWHP SAE. soxhn emlhm wltuksnu qczue qlkjtv lojzyle jmnghpl cfjqz dsvvl xkxh zfip uprhq vxcr qytcn ybcyp