Just out of the blue adding 4 degree's of timing is stupid, someone could go from 16-17 to 20-21 in the snap of the finger and that just about as fast a piston chips and goodbye motor.
This
02 GTP - Cartuning Turbo Kit VS67 3" DP, 80#INJ, N*,LQ4 MAF, Custom Cam, Roller Rockers, 130#, P&P Heads, Meth, AL103's, Corn fed, 522WHP on a mustang dyno, HP Tuners by me.