12-11-2019, 12:09 AM | #29 | |
BAMF SS
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Correction factors are to be used to "correct" dyno readings for the weather. When it gets hotter in the dyno room, or there is more humidity, your engine makes less power and vice versa. Correction factors are SUPPOSED to be used to try to mathematically correct this and set a standard weather scenario. The most commonly used one is SAE, which is 77ºF, 29.23inHg, pressure, 0% Relative Humidity. So let's say if you make a pull in the summer and its 90* in the dyno room, well your correction factor is going to be higher, because your car will make more power in the standard 77* condition. Also vice versa, if its colder. This is to allow you to compare dyno numbers from say different days/months/years and have them still be an apples to apples comparison. What a lot of (crapy) shops will do, is fudge around with their correction factors and manually manipulate them, so their dyno reads higher... because no one likes going to a low reading dyno and people like going to a high reading dyno for ego purposes. It's an amateur practice and imo a sign that you shouldnt use that shop, but that's just my opinion. Fortunately the ambient settings are saved from your pull and if you ask the shop that you want both dyno sheets in SAE, they should be able to supply you with them, without you having to redyno your car. Those two sheets will give you a representation of how much you gained with your mods, instead of now, in which since you have one corrected and one uncorrected, they are kind of pointless. And yes.. in your scanner you can add channels to log current misfires and the misfire history for each individual cylinder and the total for the entire engine. I have done the same with plug wires and I will pull those channels up after I mess with plugs/plug wires to double check they are all on tight.
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2016 1SS A8: FBO + Circle D + P1X + Meth + Tuned by Pray Performance
Stock Longblock 800 SAE rwhp. 9.4 @ 145 mph. |
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12-11-2019, 05:55 AM | #30 |
Drives: 2017 Camaro 1SS Join Date: Aug 2016
Location: NH
Posts: 1,692
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You can clear up the cf question you have by asking him to print you or email you a dyno sheet with the old run and the new run both ON THE SAME SHEET. This way both curves will be on the same correction factor, at least that is how the Dynojet software works anyway. Your new curve screenshot also has a lower power curve on the same screen, was that an old run before this round of new mods?
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12-11-2019, 06:10 AM | #31 |
Drives: 2019 zl1 6 speed Join Date: Jul 2017
Location: Lake Havasu Arizona
Posts: 977
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Yes the lower line was my stock pull that he overlaid with the most recent pull above it, aka both dynos are on the same second sheet. I remember him asking me if I wanted the numbers to reflect like a dyno jet to multiply it by 1.1, silly me i said no need as I didnt realize what was fully going on. I'll shoot him an email to see what info I can get. Ill also check for misfires after work today, thanks for the info on how to do it.
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12-11-2019, 06:47 AM | #32 | |
Drives: 2017 Camaro 1SS Join Date: Aug 2016
Location: NH
Posts: 1,692
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12-11-2019, 12:48 PM | #33 |
Drives: 2019 zl1 6 speed Join Date: Jul 2017
Location: Lake Havasu Arizona
Posts: 977
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He said nothing has changed. If you take the original number and divide it by 1.1 it's in the 380's which would explain why the first number was so high?
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12-11-2019, 01:38 PM | #34 |
Drives: 2016 Camaro SS Join Date: Sep 2018
Location: Bartlett, TN
Posts: 1,121
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12-11-2019, 02:56 PM | #35 |
Drives: 2017 2SS M6 Join Date: Jun 2013
Location: WNY
Posts: 7,071
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Your putting down just about the same as me on a mustang dyno with same mods. Your good.
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real ZL1 wheels and brakes, 285/305 Michelin Pilot Super Sports, Pray ported Intake manifold, Soler Throttle Body, Rotofab intake, EFI Tuning Flex fuel kit, full American Racing Headers Exhaust, 1 7/8" w/ cats H pipe and mufflers. Full 1LE suspension, with BMR adjustable sway bars and links, GM aluminum cradle bushings, Hurst shifter with lighter reverse spring, TWM shifter knob, Tick level 1 transmission. I should have bought a ZL1
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12-11-2019, 04:56 PM | #36 |
Drives: 2019 zl1 6 speed Join Date: Jul 2017
Location: Lake Havasu Arizona
Posts: 977
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I'm 99% sure he didnt do it the same, as he told me to multiply it to match dynojets, he said hes usually lower than most people even mustang dynos. Thanks jc, that gives me some good piece of mind. I'm still gonna check the cylinders and make sure all is well. I'd rather see it than not know and think it's ok. Thanks for all the feedback guys, that's why I love this forum!
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12-12-2019, 06:48 AM | #37 |
Drives: 2017 Camaro 1SS Join Date: Aug 2016
Location: NH
Posts: 1,692
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Looking closer at the second screenshot, it shows a significant gain in low rpm torque at 2500rpm and 3000rpm, then it starts getting closer to the old run as the revs go up. Strange.
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12-12-2019, 08:03 AM | #38 |
Drives: 6th gen Join Date: Aug 2013
Location: US
Posts: 3,670
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Did you ever retorque the intake manifold?
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12-12-2019, 09:25 AM | #39 | |
Drives: 2016 1SS NFG A8 Join Date: Aug 2017
Location: 46804
Posts: 6,789
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Quote:
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2016 NFG 1SS A8
Options-2SS Leather/NPP Perf. mods-Whipple 2.9/Fuel System/Flex Fuel/103mm TB/Rotofab Big Gulp/Cat Deletes/Corsa NPP Per. times- 10.5 @ 137 w/ 1.8 60ft Full weight on 20's 1200DA |
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12-12-2019, 05:05 PM | #40 |
Drives: 2019 zl1 6 speed Join Date: Jul 2017
Location: Lake Havasu Arizona
Posts: 977
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No, I never re torqued the screws, I figured the car wouldn't run right if one came loose and caused a vacuum leak. Sounds like we may have our answer then guys, good to know! I'm still gonna dyno again at ls fest to compare to my last one there too, cause why not, lol. That's still quite a few months out though.
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01-04-2020, 10:52 AM | #41 |
I know it's a little old.. But, if it read in the 480-490 range would you believe that either? Take it to the track and see what it traps.. I bet you'll go 11.5's @ low 120's. that's what matters. Sweet car color by the way
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01-08-2020, 08:43 AM | #42 |
Drives: Camaro Join Date: Aug 2012
Location: USA
Posts: 89
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