09-24-2015, 06:55 AM | #15 |
Drives: 2014 ZL1 White Convertible Join Date: Aug 2013
Location: St Pete Fl
Posts: 682
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I agree with the other posts, most likely its boost bleed-by. But you might need the car re-tuned if the bleed-by valve isn't the issue.
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09-24-2015, 09:11 AM | #16 |
Drives: 2015 Camaro ZL1 Join Date: Mar 2015
Location: Dallas
Posts: 97
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Perhaps dealer replaced stock tune.
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09-24-2015, 09:18 AM | #17 |
Drives: 2017 ZL1 Join Date: Aug 2009
Location: Maryland
Posts: 1,052
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I had the same issue a couple weeks ago. I found a vacuum leak, and not enough antifreeze in the system causing the car to run very hot. After fixing the problems, 11.8s in the heat.
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'17 ZL1 10.99@129 stock. 4225# raceweight. Best 60'- 1.66 on factory tires. 10.48@132 E50, intake and tune. 4270 lbs
https://youtu.be/EyHtdH9XOkY https://youtu.be/Lcu41obbTf8 '13 ZL1 BRM A6. 11.591 @ 119.2 factory stock with a 1.68 60'! Best stock mph 121.8. 11.29 @ 123 RotoFab, drag radials and skinnies. 4360# raceweight. http://youtu.be/yggIA3C_kkA 2014... back to stock http://youtu.be/spQLaTWbThs 2013... stock & RotoFab |
09-24-2015, 10:23 PM | #18 |
ROCK
Drives: 2013 ZL-1 TRIPLE BLACK VERT Join Date: Oct 2012
Location: DENVER COLORADO
Posts: 609
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Thanks to all who responded.
Rock
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09-25-2015, 12:48 AM | #19 | |
ROCK
Drives: 2013 ZL-1 TRIPLE BLACK VERT Join Date: Oct 2012
Location: DENVER COLORADO
Posts: 609
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Quote:
Where would i look to see if the coverwas not removed?
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WHEN ONE AMERICAN IS NOT WORTHY TO BE FOUND...THEN WE AS AMERICANS HAVE LOST. POW/MIA YOU ARE NOT FORGOTTEN
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09-25-2015, 05:51 AM | #20 |
Drives: '21 ZLE A10 Join Date: May 2012
Location: Mechanicsville, VA
Posts: 6,808
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as Dave said...the intercooler circuit was not properly purged of air is another possibility
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'21 ZLE A10 Wild Cherry PDR 2:00.78 VIR Full 10.68@131.69 1.68 60'
'17 ZL1 A10 Mosaic Black PDR/Nav 2:03.08 VIR Full 11.003@129.2 1.75 (sold) '15 Z/28 #325 Black a/c & stereo. 2:10.1 VIR Full (sold) '12 ZL1 A6 Black 10.52@131 1.55 60' 2:13 VIR Full (sold) |
09-25-2015, 07:46 AM | #21 |
Drives: 02 Z06, 95 Trans Am, 2012 ZL1 Join Date: Mar 2012
Location: Southeast
Posts: 1,838
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You would have to pull the supercharger lid off to see.
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Bryan 2018 ZL1 M6
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09-25-2015, 08:03 AM | #22 |
Drives: 2014 ZL1 Join Date: Sep 2012
Location: West Virginia
Posts: 591
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When i had mine replaced, it was also low on fluid. They also did not put all of the rods back to hold the engine cover on.
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09-25-2015, 03:35 PM | #23 |
ROCK
Drives: 2013 ZL-1 TRIPLE BLACK VERT Join Date: Oct 2012
Location: DENVER COLORADO
Posts: 609
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Thanks guys. I am gonna adjust the bypass this weekend.
Will let you know how i make out
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WHEN ONE AMERICAN IS NOT WORTHY TO BE FOUND...THEN WE AS AMERICANS HAVE LOST. POW/MIA YOU ARE NOT FORGOTTEN
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09-25-2015, 03:59 PM | #24 |
Drives: 2013 ZL1 A6 #7860 Join Date: Apr 2014
Location: CO, USA
Posts: 1,279
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Is it possible you are comparing it to a really good run in good air but your latest runs were with bad air?
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10-01-2015, 12:14 AM | #25 | |
ROCK
Drives: 2013 ZL-1 TRIPLE BLACK VERT Join Date: Oct 2012
Location: DENVER COLORADO
Posts: 609
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(stupid is me)
Quote:
I consitantly ran 12.7. 12.8 last year at Bandimreres. Best time was 12.68 Car has never run slower even on 95° days. 30 minute cool down between runs. Temp was @ 90 when i ran 13.14 13.06 13.1 Stock tune with Janetty 75RWHP KIT-Rotofab CAI and 10% lower pulley. Have not been back to see if adjusting the Bypass has made any difference. Dyno showed 564 rwhp and 10.48 lbs of boost I may take it.back to the shop and have it dyno'd again
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WHEN ONE AMERICAN IS NOT WORTHY TO BE FOUND...THEN WE AS AMERICANS HAVE LOST. POW/MIA YOU ARE NOT FORGOTTEN
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