advanced timing

[dashee03]

How much can i avance my timing while running 93 octane. My compression is 135.

Thanks

[dajogejr]

Should be ok with +4...but listen to your engine. If it starts running like pooh, or...it sounds likes steel bearings are shaking around inside your motor, back it off or run a little bit of race gas, say 25%.

 

You should be ok...