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mktbull said:I'm installing a new whipple with stock 3.5 pulley, what lower pulley you guys recommend, I was thinking #4lb but that will push me into 17-18 psi, it that still safe on 93 octane?
gnxs said:I have a 4 pound lower and don't feel safe unless I mix a little 100 octane in. If you are 100% set on running 93 octane I would go with the 2 pound lower.
FYI, I see 18 psi in cool air with my 4 pound lower/3.5 upper.
mktbull said:Would octane booster work? like that 108 stuff.
mktbull said:where can i buy torco?
SLASH said:k/b 2,2. 4# low, 3.1 up...21psi...stock...no issues. use only 93 octane
SLASH said:i run a safe tune and i do usually use 1/4 to 1/2 tank 100 octane.
SLASH said:oh yea...forgot the spray...hahahaha
i run a safe tune and i do usually use 1/4 to 1/2 tank 100 octane.
SLASH said:it actually runs better without the 100??!! i just started using it
Flyn high again said:The extra octane helps prevent detonation so it allows you to run more boost or timing without the engine going BANG. The way the engine runs is determined by many factors including your tune, plugs and gap, fuel delivery, air intake, etc.
There is quite a bit of discussion on how much boost and timing is safe on 93 and you are right at the limits. Considering you're also spraying, you're past the limits and your motor is living on borrowed time with 93 octane.