Ok I won't get mad it's my fault I should have told everything to begin with. I'm not a complete moron yes I have tuned for the 650's, I didn't just slap them in there and call it good. There seems to be a very fine line between sputtering because of running pig rich, and running too lean with my car here. Now the problem is that I don't seem to be able to get on that line, if I lean it out just a hair it knocks because of lack of fuel, but if I richen it up it sputters and boggs. Mods are apexi N1 turbo back(2.5 to 3 in piping), SAFC I, 255 lb/hr walbro, 650cc injectors, stage 2 chip, K&N with hacked can, MBC set to about 12.5~13psi. Ok now proceed with any further advice, please.

93 Tsi AWD-SAFC I, Apexi N1 turbo back, MBC, K&N w/ hacked can,
Walbro 255, Accel wires, 650cc injectors, stage 3 dsmchip

97 Neon ACR-Stock