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Old 03-26-2018, 07:00 AM   #1363
big dave

 
Drives: 2017 ZL1
Join Date: Aug 2009
Location: Maryland
Posts: 1,052
Quote:
Originally Posted by Lt1z350 View Post
Should see a lot more of these with people fixing the boost bypass GM screwed up. Did tune only on mine this weekend and what a difference so far just letting the car use what it has with no limits. With out all the timing pull on the shifts it sounds like a different vehicle. Once my Toyo R888R get here I’ll get back to the track and post my times in a thread under the zl1 stuff. Going to sssume that was the accurate mph lane? Quarter mph good 1/8 down a little for the time seems when the car hooks better mph goes down some as pisses off the torque management. Dave on your boost gage is your car cresting the third line or staying near the second or middle line most of the time? Just curious if your bypass is already set right as a few haven’t seen gains but so far most have showing some are actually set the right way from the factory.
Can't wait to see what your car runs now after the tune. I haven't messed with the boost bypass though I did look to see where it was. I don't think there's anything wrong with mine, it's hard to believe I'm down on power. Frankly I'm a little afraid to touch anything on this car. I still have my Rotofab sitting in the box in the corner, been there for months. lol.

I went to a totally different track this time and the numbers seem to add up. My 1/8th mph seems to be more in line with where it should be. The other track was only showing 98 - 99 mph.
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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
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