ok im finishing dialing my tune on a 03 silverado 6.0 s475 runnning 11psi im about 15degrees of timing no knock but i just instal a meth kit to get up the boost on pump gas the question is what i have to do in the tune for the meth injection? wich AFR should I target im on 11.2 at 11psi I want to run as high boost as the octane let me do