06-24-2021, 08:32 AM | #1 |
Drives: 2018 ZL1 Join Date: May 2021
Location: Texas
Posts: 21
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Dyno before and after
I bought this car in May and it already had 1 7/8 ARH headers, Rotofab and a tune. I had a meth system added and had them re-tune. It's an A10. Do these numbers look low? I know a dyno is just a tool but kinda figured both numbers should be higher.
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06-24-2021, 09:36 AM | #2 |
Drives: 2019 ZL1 Join Date: Oct 2019
Location: GA
Posts: 573
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540 with headers, rotofab and tune is super low, esp in STD readout. Should be more like 550ish stock SAE. However, based on the MPH, they are using the wrong gear. Using 1-6 will show lower power output compared to 1:1, 7th gear. 7th gear hits like 180+ mph on the dyno so its obvious they went with a different gear.
That being said, the gains look great with the meth! Any idea what the car made stock in that same gear used above? |
06-24-2021, 10:21 AM | #3 | |
Thank you Al Oppenheiser!
Drives: Red Hot A10 ZL1 Convertible Join Date: Jun 2017
Location: Sarasota, FL
Posts: 4,963
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Quote:
So OP, just ignore the absolute #. It's RELATIVE CHANGE you only need be concerned about, and +40/+40 seems fine for just meth, and likely giving you a nice cooling effect at that high ambient. For big power you need air and fuel. You got more fuel, so now you need to get more air into the cylinders. Perhaps a lower pulley and possibly a TB if your rotofab is a big gulp. |
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06-24-2021, 11:54 AM | #4 | |
Drives: 2018 ZL1 Join Date: May 2021
Location: Texas
Posts: 21
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Quote:
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06-24-2021, 11:55 AM | #5 |
Drives: 2018 ZL1 Join Date: May 2021
Location: Texas
Posts: 21
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Thanks. The above information is very helpful. I was a little worried. Glad to know it's not the car and is the conditions.
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06-24-2021, 11:58 AM | #6 |
Drives: 2017 ZL1 Join Date: Jan 2017
Location: NJ
Posts: 904
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FYI my local mustang (dynamic load) puts M6 cars ~500-520 whp, you cannot compare one dyno to another. Going to another local dyno with the same car but Dynojet is roughly 10 hp per 100hp above 600whp. So if I pulled in a 730 whp run it would be ~800 whp on dyno jet. Just use it for the delta!
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2017 Camaro ZL1 Coupe M6 (847whp Dynojet on 93)
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06-24-2021, 04:39 PM | #7 |
Drives: 2023 ZL1 M6 Join Date: Sep 2018
Location: Pace FL
Posts: 412
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These cars don’t dyno well in 90 degree temps. Once the little heat maker is hot, it’s hard to get air temps back down when it’s 98 degrees.
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2024 Riverside Blue ZL1 M6
Magnuson 2650R, Roto Fab Big Gulp, NW 103, ARH 2 inch LT's, Stainless Works NPP Signature Forged 20x10.5/20x11.5, BMR springs, BMR Cradle lockout, AAD Billet Control/Trailing arms 2023 Vivid Orange ZL1 M6 - sold 2019 Riverside Blue ZL1 A10 - sold |
06-24-2021, 07:46 PM | #8 | |
Drives: 2019 ZL1 Join Date: Mar 2019
Location: NJ
Posts: 1,534
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Quote:
Dynojets are more accurate though as a whole based on SAE flywheel horsepower. 650 crank +/- 15% drive loss A10 = 552. (which is what most A10 Zl1's make average stock).
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928rwhp - 93 | 1040rwhp/898rwrq - E65 SAE
LME 377 LT4 Short Block | Magnuson 2650 80mm upper w/13% lower (9.06) | DSX Lid & Valve Covers | CSP Custom Cam w/32% fuel lobe | CID Heads | NW 103mm TB | Roto Fab Big Gulp | CSP 2" Headers w/Green GESI Gen 2 Cats | Borla 3" Full Cat Back w/ S-Type| Mighty Mouse Wild Catch Can| Custom Holley Low side Fuel system| TooHigh PSI Port Injection w/Holley Controller | Forced Inductions Interchiller w/2 gallon fender tank | TK Performance built 10L90 |
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