well i got around to putting the cap back on today to see if it stopped the stumble i was experinceing and it did stop . i think ill try it with out the cap after i get my exhaust work done , and see if that could have been the problem. ill bet people that have done a fuel mod arent having this probelm , maybe even bigger injector and a computer to get everythiung jsut right . but i still do liek the way it sounds and the power increase i experinced ,but ill keep it capped and go back to stock for a while .

airrikk17

'07 toyota fj crusier, with a bunch of goodies
84' jeep cj-7 , current offroad only project