I am no expert but I have had my share of problems with fuel cut. If you are trying to run more boost I would just look to get a set of 550cc injectors, but if you are happy with what you got then just get a stock afm and check for boost leaks. Also check for any codes. One other thing to, something that I struggled with for a while was really understanding how fuel cut works. Be sure to do your research on it. (Correct me if I am wrong experts) The ECU reads a signal called the Kormen Vortec Frequency signal that engages fuel cut once the signal is outside its normal limits and that is determined based of temp, tps, rpm, boost, etc... Hope that helps