Recently i did a head, cam intake swap on my car. Along with HCI my car has a Vortech, and 36lb injectors. Since i put the injectors in the car runs really bad at idle and when cold. Also it has been popping through the intake. Timing is dead on, only thing i can get from it is that the injectors are too much and it is causing the car to pop. I pulled number 5 spark plug and the electrode was normal but around the base of the injectors it had alot of carbon. It has a matching pro-m Maf, fuel pressure is set at 38psi, and no FMUAny help will be greatly appreciated. Heres a couple pics of number 5 plug: