how much boost can you run on a street driven,93 octane gas truck without having to either mix racing gas or add octane booster?i keep reading that 18 psi is the limit and off course it depends on the tune.but only so much timing can be pulled out before you reach a point of deminishing return for the performance you get,or something like that.

 

octane booster will raise it one-two points.
so 93 octane will become 93.2 octane.
it does NOT raise it to 95 octane. that is 20 points!

 

Kenne Bell's website states that you can achieve a 95 rating by using NOS Octane booster off road fromula or racing fromula. There was a sheet they sent with my KB blower that calculated out Octane ratings. They also recomended the NOS brand (race formula).