Well, if your car hits fuel cut on a direct port, bye bye motor. You're obviously not getting enough nitrous in the car, and too much fuel-- which is good w/ nitrous. So, basically warm the bottle up to about 900psi then you should (as long as everything is okay) be able to fell the pull. Also, make sure your nitrous solenoid is opening up--so check the wiring on it. Hope this helps.