LS12Fast4U

iTrader: (1)

Getting my Diablosport custom tuned on a dyno for my car ( 99 T/A LS1) or sending in my computer to have it tuned and the emissions crap taken off? Has anyone done either or and what was your end result? Any comment would be appreciated.

Thanks

NoGo

iTrader: (2)

It depends on your modifications, but typically an aftermarket tune will net 8-15 hp on a lightly modified car (ie bolt-ons).

You are better off getting it custom tailored to your car on a dyno. Mail tunes are good for making cars drivable/safe, but not so much for optimal power.