i put a 50 shot on my ls/vtec its in a 92 vx hatchback and it sputters when i use nitrous? i have the ngk r v-power (7) plugs and i retarded my timing so the timing mark is on the middle mark on the crank pully. the kit is a nitrous works wet kit. but the thing is my car wont sputter if the tires are spining... but it sputters when the tires hook and theres a load on the motor? do i just need a bigger fuel pump? any suggestions please!!!