c12 or c16?

[trbojo]

i only have a street chip. it says "street 93" on it. i am planning on runing 20-22 lbs. of boost. will i be better off using the c-12 0r c-16 considering i have a lower timing chip? i have a lead proof heated o2 sensor. i believe it is a jay carter chip.

 

[86brick]

C-12.

 

[John Wilde]

I have always used the c-16 with 24* and 23psi on stock motor and turbo. You probably could get away with even less.
Depending on your tune up maybe 100 octane unleaded.

 

[trbojo]

i would like to use something a little higher than the unleaded 100, especially since i don't have a scan tool yet. i'd rather be on the safer side with higher octane. i guess what i really want to know is will it actually hurt performance using the higher c-12 or c-16?

 

[TylerDurden]

c12 should be more than adequate and is probably a couple bucks cheaper per gallon....like some have said, 100 octane should be enough but without a scan tool overkill on gas isnt a bad idea