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10-09-2019, 05:46 PM
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#15 |
  
Drives: 2002 z28, 2018 2ss 1LE Join Date: Sep 2012
Location: Parrish, Florida
Posts: 861
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Nice numbers , would love to hear it , do you have a video ?
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10-09-2019, 05:52 PM
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#16 |
Drives: 2015 Camaro Z/28 Join Date: May 2009
Location: NM
Posts: 930
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I am no expert but 357 RWHP @ 5800 rpm stock seems awfully low. I have read bad things about the GM cold air intake and tune which is one reason I never got one.
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2015 Camaro Z/28 - Red Hot
1978 Trans Am Y88 Special Edition 400/4 speed 2001 Mecham Trans Am #3 - 7.0L LS1 |
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10-09-2019, 06:44 PM
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#17 |
     
Drives: 2018 Camaro 1SS 1LE Join Date: Sep 2018
Location: Front Range, CO
Posts: 2,204
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Nice, but your baseline is flat out wrong and I believe 95% of your gains came from the E85 and tune.
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10-09-2019, 08:00 PM
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#18 |
Drives: 2017 1le current /2015 2ss 1le sold Join Date: Jan 2016
Location: Whitesburg Ga 30185
Posts: 759
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400+ shoulda been the baseline. Something ain't right.
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2017 1LE Hyper Blue
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10-10-2019, 09:02 AM
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#19 |
 Drives: 2019 Chevy Camaro SS 1LE Join Date: Jul 2019
Location: Washington, DC
Posts: 10
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Thank you for all the feedback. Y'all are correct. There was an issue from the start and associated with the GM CAI. Here's some additional background.
Pre-work dyno runs to establish a starting point, and with the only modification being a Chevrolet Performance air-intake system, the baseline came in at 353.87whp & 395.79lbft. Far less than expected, but after inspecting the datalogs, we noticed that the short term fuel trims were alarmingly out of line. The only logical conclusion we could draw is that the intake wasn't playing nicely with the factory calibration, which is obviously odd given the manufacturer. Once we determined the low power wasn't due to a mechanical issue, we moved to the shop and installed Stainless Works long-tube headers and Chambered S-Tube exhaust system (NPP compatible), MSD Performance spark-plug wires with Design Engineering, Inc. Protect-a-Boots, Mishimoto Automotive 160° thermostat, and a DSX Tuning Flex Fuel conversion. With the mechanical work wrapped in the shop, Charlie strapped her back down to the rollers for Vlad to perform the 93 octane calibration up first via HP Tuners. Our hypothesis proved out, with the LT1's output jumping to 440.00whp & 445.30lbft -- gaining 86.13whp & 49.51lbft on 93 octane alone! Then, with E85 in the tank, Vlad moved on to the Flex Fuel calibration, increasing output to 461.49 & 469.00lbft -- gaining 107.62whp & 73.21lbft at peak over baseline, and over 130lbft at ~3,700rpm! |
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10-10-2019, 09:03 AM
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#20 | |
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Drives: 2019 Chevy Camaro SS 1LE Join Date: Jul 2019
Location: Washington, DC
Posts: 10
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Quote:
Thank you. You are absolutely correct. |
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10-10-2019, 09:04 AM
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#21 | |
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Drives: 2019 Chevy Camaro SS 1LE Join Date: Jul 2019
Location: Washington, DC
Posts: 10
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Quote:
Yes, the GM CAI was part of the issue. |
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