Guys my car reads like 5.5 - 6psi on the stock car/guage. Im trying to make a desision on what size pully to use. Its a 05 s/c .
Any input would be great.
Im thinking the 3.40=9.5 psi pully, with a custom tune and 39lbs injectors. maybe fuel pump if needed.
Another question, how hard is it...