ok did that zex kit come with the car? if it did find out how much the dude you bought if off of sprayed it. if he sprayed the balls out of it you might wanna consider building it first. if not return it. if you really want nitrous get an nx wet kit. if u want all motor go ls-vtec, if u want to run 5-7 psi go jackson racing charger, you will get the top AND low end with that. if u want to go high boost then go turbo.