Spraying a 11.5:1 CR motor - is it safe for 93 octane?

 

How much? Probaly want to go 21-23ish degrees. Of course that depends on how much you want to spray too.

 

no more than a 200-250shot

 

Don't chance it... Put some 100+ fuel in it.

 

I did 100 shot on 11.25cr on 91 octane with 26degree of timming with 0knock. its all in the tune

 

I will be spraying 150 shot on a 11:7 to 1 soon so you should be ok at a simular level. Just make sure your fuel system can keep up. You can have all the octane you want but if the fuel system will not push enough fuel the motor will go boom.

 

fuel system should be fine, its Speed Incs setup, high flow rails, Bosch 420L, larger lines, FPR, etc