Originally Posted by
WonUpRacing
I wouldn't run 12.5:1 unless you can get timing spot on. Maybe 11:1 or a tad more.
How big of a shot are you running and what's your set-up?
With a good tune 12.5:1 is perfectly fine . Your going to as I said either need to pull ALOT of timing for nitrous or run a race gas cell for it .