well i seems to have like a fuel cut around 4500rpms or so. it hits full boost then kinda hits a wall. not really to sure on what it could be. could it be plugs. these were run with nitrous a few times. the nitrous kit had a mess up an made the motor run rich. could it be bad plugs??? im running 1 step colder. maybe i should get some new ones? i have a set of normal heat range new.