Thread: Zl1 QTP cut out
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Old 04-27-2013, 05:42 PM   #25
SlingShot


 
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Drives: 2012 ZL1 - #670
Join Date: Jun 2009
Location: Seminole, Fl.
Posts: 8,009
The gains claimed are around 20-25. The exhaust is much louder over the stock cats, when you mat the gas. At cruise it's a little more than stock. There is no problem have conversations while driving "normal" ...

I'll get another video while driving when I get a chance. The car sounds much different under load, then idling in the driveway.
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