Depends on what your fuel target is now & whether you are running 91 or 93 to start. Also depends on what boost you are set at right now. Me for example am runnning +24psi on 93 oct, the turbo is nearly out of its efficiency range, so on meth I can squeeze maybe another psi out of it but I can advance timing over 4 degrees & lean it out to 12:1.
i am running 19.5 psi tops and taper down at redline.
i believe my target afrs are in the low 11s.
running 93 to start and i'll mix 5 gallons of 109 with no more than a half tank of 93
should be roughly 100 octane final.
not wanting to go super aggressive, i'll leave that to the professional when i can get out to him.
basically i'm trying to get a low 13 second car to run like a high 12.
btw jeremy, I have 2 methods of spraying my intercooler since we last went on a tuning crusade.
also how did you do that HP calculation???