i'm going to put in my powerdyne SC 6# and was wondering if it would be safe to drive without the tune? do not have bigger injectors yet....would a PCMforless tune be ok for it? ... Will i def. need bigger injectors? new ot the FI world

 

My powerdyne 6# only made 4 n change on the LT-1.
Now with the 9 # I'm making 6+.
I think you'll be alright on a stock tune with stock injectors with the 6 lb pulley.