J 9MAX9

I recently had a holley 255 external fuel pump installed on my 99 SEL, for use with my zex nitrous kit. Before the pump, the nitrous worked fine, no problems. Today, i used the nitrous for the first time with the new pump (i'm running a 65 shot). The nitrous kicked in, and worked for about 2 seconds, then the car started to buck. I shut the nitrous off and the car continued to buck for about 30 seconds. As soon as i pulled over, and opened the hood, there was a strong smell of gas. I can't tell where the gas is coming from, but its under the hood somewhere, not my fuel pump. The car runs fine now, but there's something obviously wrong, only when i squeeze, anyone know what it could be??