Sae j607 tuning. 93" of mercury and no correction for vapor pressure.
Sae j607 tuning These correction factors are used by dyno shops to correct for nonstandard temperature, barometric pressure and humidity. 234 in-Hg (99kPa) Baprace HotPass Posts: 1988 Joined: Sun Aug 06, 2006 8:57 am Location: Henrietta NY 14623 Feb 25, 2019 · “Some ‘tuning’ shops will report STD [SAE J607] numbers because they are always higher than [J1349]. 1005 because it is correcting by more than 10%, however the SAE J1349 factor of 1. Along with a nostrum high pressure fuel pump and many other upgrades when a manufacturer says the engine produces a maximum of 300bhp, are there any SAE standards that say it was measured at certain temperature and altitudes? Small Spark Ignition Engine Test Code (Cancelled Aug 1988) J607_198808 - 1988-08-25 This correction factor is actually SAE J607, and also referred to as “Racer Corrected. 3kPa) SAE J1349 (ECE and JIS is same) 77°F (25C) 0% humidity barometric pressure of 29. So, if you plan to compare Hotrod or Racing Engine dyno figures between various engines across the nation, you must use this correction factor in order to be on the same page with most everyone else. Jul 22, 2009 · C6 Tech/Performance - Dyno Sheets - SAE vs. S. 1349 is more accurate than SAE J607 but if the Correction Factor is greater 5-6%, bets are off on accuracy of the computed HP. Voluntary Engineering Standards United States. CF that day was 1. 92”Hg, 60degF, dry air and that the difference between these two methods of correction is about 4% with SAEJ1349 giving smaller corrected numbers than does SAE J607 if we were Whether you prefer SAE or STD correction, it’s important to know how each factor influences the results, so you can make informed decisions based on accurate, standardized data. Apr 15, 2022 · Event: Dyno Tune Location: Touge Tuning, Mississauga Ontario Elevation: 249ft Car: 2013 Subaru WRX STi Tuner: TurboTek Dyno Info: Mainline Prohub Transmission: 6-speed Gear: 4th Peak HP at RPM This correction factor is actually SAE J607, and also referred to as “Racer Corrected. You want a real argument - then we could discuss DYNOJET numbers vs the real world -and the fact that DynoJets are ridiculously high ! Dyno correction calculator Correct your engine's power output for different atmospheric conditions using our easy-to-use calculator. It subtracts corrected vapor pressure from observed barometric pressure to correct for water vapor in the air. Blue = observed, yellow = SAE J607 correction factor applied, and green = J607 + Inertia. 234 in-Hg (99kPa) Baprace HotPass Posts: 1985 Joined: Sun Aug 06, 2006 8:57 am Location: Henrietta NY 14623 Also, what does ADR stand for?? Always wondered. 18 SAE J607, corrected to 15°C, 1013mBar: K = ( (1013/Pdry) x ( (Temp+273) / 288) ^ 0. 234 in-Hg (99kPa) Baprace HotPass Posts: 2021 Joined: Sun Aug 06, 2006 8:57 am Location: Henrietta NY 14623 Dec 4, 2020 · Also, what does ADR stand for?? Always wondered. A. 234 in-Hg (99 KPa). 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. National Bureau of Standards,1971 Index of Specifications and Standards , Power Farming in Australia and New Zealand Technical Manual ,1982 An Index of State Specifications and Standards May 9, 2017 · 2017 ZL1 Bone Stock Dyno Runs Anyone? ZL1 Discussions « Previous Thread Next Thread » Dyno Correction Factor Calculator (online) Jun 22, 2021 · This heavily modified 2015 Subaru WRX was custom tuned by TurboTek Tuning has an ETS intake, EWG header and catless J-pipe. 068. 8 lb-ft of torque at 4,600 rpm and 512. Governor characteristics are considered part of the end item specification. Jun 1, 2011 · On the eddy current dyno, they used a correction factor SAE J1995, the Dynojet used SAE J1349, and the SF901 used the SAE J607. :willy: I did a little research and found a good read: There are few standards used in the dyno world May 2, 2010 · SAE J607 also called SAE STD, which is the classic Hotrod and Racing Engine correction factor used by most folks on an engine dyno. Be sure to ask which correction factor is being used when comparing dyno numbers! Oct 24, 2024 · Earlier in this thread I commented on how fast sweep rates + Inertia added on SF dynos can deliver big numbers, so here is an example from data exported from WinDyn of a 600 RPM/SEC dyno sweep. Learn how tuning shops inflate numbers and what red flags to watch for before you pay. Two common standards are SAE J1349 and SAE J607, also known as STD. ” Simply speaking, the STP correction factor takes the ambient conditions and corrects the observed data to 60° F, a barometric pressure of 29. E. 82 L (50 in3) or less in displacement and 15. Perhaps DynoJet can verify what, if any, friction/drivetrain loss factor it includes in its' motorcycle SAE CF . SAE J1349, corrected to 25°C, 990mBar: K = ( (990/Pdry) x ( (Temp+273) / 298) ^ 0. 92 in-Hg. 0634 could just barely be used. “All runs were on 91-octane unleaded "California" pump premium gas, corrected using the SAE J607 performance-industry standard factor (roughly equivalent to the old-school muscle car "gross horsepower" rating method, it generates numbers roughly 4-percent higher than SAE J1349 net hp, the rating method in use for late-mode” This correction factor is actually SAE J607, and also referred to as “Racer Corrected. Also, what does ADR stand for?? Always wondered. Aug 31, 2023 · It’s also worth mentioning we adhere to SAE J607 Standard of automotive engineers’ correction, so we collect repeatable numbers from day to day allowing for weather correction. Notes: + : J607 with Humidity Correction. It was recommended that J1349 be used instead. R Nov 21, 2025 · Investigation into dyno manipulation and false horsepower claims. . Anybody know? Print Go Up Pages1 User actions HarleyTechTalk Dyno & Tuning Zone Apr 6, 2020 · Corrected to SAE J607 and running on 91-octane pump gas, on the engine dyno at the flywheel the 393 developed 500. Jan 24, 2015 · Correction Factor SAE J607 This factor is commonly used by the performance industry, particularly on engine dynos. Sources for Understanding Dyno Correction Factors SAE International (Society Automotive Engineers) SAE J1349 Engine Power Test Code STD J607 Small Spark Engine Test Code May 20, 2018 · In fact, SAE requires that the corrections be less than ± 7%. As previously stated, test results are going to differ based on different correction factors. 3 hp at 5,800 rpm. 0 or higher for optimal download performance; older versions should continue to work, but downloading large files may appear to take longer, so please be patient in those cases. This correction factor is actually SAE J607, and also referred to as “Racer Corrected. 18) - 0. Dynojet version of STD correction does perform humidity correction based on J607 formula. 234 in-Hg (99kPa) Baprace HotPass Posts: 1988 Joined: Sun Aug 06, 2006 8:57 am Location: Henrietta NY 14623 Dec 4, 2020 · Also, what does ADR stand for?? Always wondered. 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. Additional Details Publisher SAE International Published Jun 1, 1974 Product Code J607A_197406 Content Type Technical Standard Status Revised Language English Apr 8, 2020 · Reelysalty said: . " The SAE J607 standard specifies a maximum ceiling of 10% power correction, on the basis that any power correction in excess of 10% will produce a power figure that cannot necessarily be reproduced by the vehicle under optimum conditions. Oct 24, 2025 · NOTE: It is recommended that you use Adobe Reader v7. 234 in-Hg (99kPa) Baprace HotPass Posts: 1977 Joined: Sun Aug 06, 2006 8:57 am Location: Henrietta NY 14623 As previously stated, test results are going to differ based on different correction factors. This calculator converts your dyno run into corrected SAE, MSA and STD horsepower. Use Station Pressure reading and not the 'corrected' barometer reading. 234 in-Hg (99kPa) Baprace HotPass Posts: 2045 Joined: Sun Aug 06, 2006 8:57 am Location: Henrietta NY 14623 Also, what does ADR stand for?? Always wondered. So in the example above we would not be allowed to use the STD or standard J607 SAE factor of 1. Originally Posted by rmbuilder Rob, First let me point out that no matter what correction factor (SAE J607 or J1349) you are using in your test session, the SAE clearly states that if correction factors in excess of 7% occur during the testing, the results are invalid and the input criteria must be brought to within accepted parameters. Be sure to ask which correction factor is being used when comparing dyno numbers!” Also, what does ADR stand for?? Always wondered. The purpose of this code is to prove a uniform means of comparing small gasoline engines of 0. A lot of letters and numbers that didn't mean anything yet. Slattery,1971 An Index of U. 92 in-Hg (101. These standards adjust for factors such as temperature, humidity, and barometric pressure. 92 in Hg and dry air (zero humidity). Dec 25, 2006 · Standard (J607) will report higher numbers than SAE (J1349 ). 5 Two common standards are SAE J1349 and SAE J607, also known as STD. Whereas the newer SAE J1349 standard is 77F with 0% humidity and a barometric pressure of 29. It corrects observed data to STP, or 60 degrees F at a barometric pressure of 29. 234 in-Hg (99kPa) Baprace HotPass Posts: 1809 Joined: Sun Aug 06, 2006 8:57 am Location: Henrietta NY 14623 Dec 4, 2020 · Also, what does ADR stand for?? Always wondered. 93" of mercury and no correction for vapor pressure. May 26, 2009 · are different from each other, with SAE J1349 typically about 4% lower than SAE J607. Consequently, J607 gives higher values, which fail to include the friction losses. STD is SAE J607 (DIN is the same) 60°F (20C) 0% humidity barometric pressure of 29. Two common standards are SAE J1349 and SAE J607, also known as STD. Some “tuning” shops will report STD numbers because they are always higher than SAE. OEMs will almost always quote J1349 corrected numbers when advertising horsepower and torque. For instance, the SAE J1349 standard corrects to a 77°F day with 0% humidity and a barometric pressure of 29. Voluntary Engineering Standards William J. Jan 23, 2023 · Note: SAE J607 is an older standard which did not attempt to include any of the engine's internal friction losses. 234 in-Hg. nr M2618 Manufacture Briggs & Stratton Type SAE J607 hp 5 rpm 3600 Remarks Briggs & Stratton SAE J607, with Desmi Pump SA-50 Aug 24, 2011 · SAE J607 was last published in the 1984 SAE handbook, of which I do not have a copy (I found the reference to the '84 Handbook in my 1994 handbook). 69 Judge is spot on with his comments on SAE J607. STD is also known as J607 and it uses standard conditions of 60 As stated earlier, as of the writing of the Dyno Testing and Tuning book (ca 2007), the current SAE J1349 standards are corrected to 29. Sae J607 Manual: S. The two most common standards are SAE J1349 and SAE J607 (sometimes known as “STD” on some dynos). Aug 9, 2007 · The older SAE J607 standard assumes the engine is being run where the environmental conditions are 60F, 0% humidity with a barometric pressure of 29. Dec 4, 2020 · Also, what does ADR stand for?? Always wondered. 5 x 1. It is not intended as a laboratory manual. The SAE J607 standard specifies a maximum ceiling of 10% power correction, on the basis that any power correction in excess of 10% will produce a power figure that cannot necessarily be reproduced by the vehicle under optimum conditions. Manufactures will frequently report J1349-corrected measurements whenever their advertising is aimed at the promotion of horsepower and torque numbers. These calculations are derived from SAE J1349 Revision AUG2004. 234 in-Hg (99kPa) Baprace HotPass Posts: 2040 Joined: Sun Aug 06, 2006 8:57 am Location: Henrietta NY 14623 This correction factor is actually SAE J607, and also referred to as “Racer Corrected. 234 in-Hg (99kPa) Baprace HotPass Posts: 1988 Joined: Sun Aug 06, 2006 8:57 am Location: Henrietta NY 14623 Types of Dyno Correction Factors The most common correction standards include the SAE J607 (STD), SAE J1349, ECE, DIN, and JIS. 1 kW (20 hp) or less in power output. Note the current SAE J607 standards are corrected to 29. Additional Details Publisher SAE International Published Aug 25, 1988 Product Code J607_198808 Content Type Technical Standard Status Canceled Language English Collapse Revisions Panel Jul 30, 2019 · Such is not a part of J607 or J607+ which further separates so-called "STD" and SAE power curves and numbers. Most often, the former is approximately 4% lower than the latter. Air density is affected by the temperature, pressure and humidity of the air Jul 20, 2021 · Event: Dyno Tune Location: Touge Tuning, Mississauga Ontario Ambient Temp: 20. Or have a copy of the SAE J607 standard? And, while we're at it: I seem to recall reading somewhere that Dynojet STD correction is calculated using the SAE J607 formula, but somehow adapted to account for humidity and using a different reference temperature. 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. 8 C Elevation: 249ft Car: 10gen Honda Civic Si Tuner: Ray from TurboTek Dyno Info: Mainline Prohub Transmission: 6 2010 Subaru WRX STi came in for a custom! Modifications: Cobb SF Intake Invidia 3" Downpipe Tomei Unequal length headers TGV Deletes IAG Stage 2 Block Event: Dyno Tune Location: Touge Tuning Jan 20, 2024 · And yes, SAE J1349 does use humidity in calculating a correction factor. 234 in-Hg (99kPa) Baprace HotPass Posts: 1988 Joined: Sun Aug 06, 2006 8:57 am Location: Henrietta NY 14623 Dec 12, 2020 · Also, what does ADR stand for?? Always wondered. Sep 13, 2011 · STD, or standard correction, represents one of the oldest correction factors used by the Society of Automotive Engineers (SAE). 23”Hg, 77degF, dry air. So, if you really want the J607, look for a copy of the 1984 handbook, perhaps in a university library. Briggs & Stratton - SAE J607 Status Available Ref. J607 specification formula does not perform humidity correction. Handbook ,1987 NBS Special Publication ,1971 An Index of U. This SAE standard provides guidelines for testing small spark-ignition engines to ensure performance and reliability.