hello all as some of you know i have a jap spec STI7 and where i live the highest ron fuel is about 94 95 at best ...recently i mixed approximatly 1 1/2 gallon of C16 raceing fuel to a full tank of gas and it made a great difference absolutly no det...if anyone has any comments please advise.

 

Depends how much your C16 costs ? Sounds like an expensive octane booster to me plus C16 is a leaded gas which will screw your O2 sensor eventually.

Andy