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Trifecta Tune Requires Premium?

5K views 15 replies 7 participants last post by  4dr-LS 
#1 ·
So my friend told me that if i tune my l61 with trifecta that my car is going to require premium fuel and im gonna be getting 25mpg instead of 35, wtf is that true?
 
#13 ·
I get 25mpg (According to the DIC) with GM stage 2 flogging the hell out of it. There is no way in hell your car is going to be that low being a n/a L61 with bolt ons and a tune.

Anyways, as far as the fuel grade, it depends on what you have vince tune it for. If you have your car tuned for premium fuel, he can advance the spark timing much more than he could with regular, so that is something to consider if you want more power and don't mind getting premium. Otherwise, he can easily tune it for 87.
 
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