SPUTTERING on take off

[chops]

This car is driving me crazy!!!!! Sputtering on take off and knock at times on high boost here is what I have 1 p61 turbo. 2.. injectors 50pnds. 3 roller cam lifters and springs...... 4mild ported stock heads .. I have no alky yet and stock mass air flow am thinking the mass air is bad I just put in a reds fuel pump any help before I burn this car

 

[PLAINWHITE T]

I had similar issues with my car last spring and it turned out to be a clogged fuel filter.

 

[gmmuscle]

DO you have a scanmaster? I just got one and am having serious intermittant hesitation problems also. Data does not indicate anything other than Too rich. I changed fuel filter and put hot wire to fuel pump. Thats when it seemed to go rich. My next guess is fuel pump because at idle I get intermittant rpm surging and can hear the fuel pump whine change with the surge. Will be getting a fuel pressure gauge that can be read while driving. Would recommend the same for you.

Good luck

Carl