Quote:
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Originally Posted by Millie
Quote:
Originally Posted by Thik
Guess I'll stick to Shell V-Power, but fill with Ultra 94 when going to the track. I'm convinced 94 octane give our cars more power.
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If you are not tuned for it, you are just wasting your money. I found no noticeable difference between Vpower and Chevron 94 (no ethanol) |
I'm not so sure. It's my understanding this car will advance timing up to a certain octane number without a tune. A tune will set parameters to run optimally at a certain octane number as a constant. Someone please chime in if I'm wrong.