So I've beg trying to figure this out for awhile now.i have a99gt when I'm driving the car bogs down when under acceleration light or heavy.sometimes it has no hesitation our anything like that it gets up and goes no problem but sometimes higher rpms it sputters. I know I have an exhaust leak but doubt this could do wheats going on. How can I trouble shoot if injectors are bad? Don't have a voltage meter, but what all could do this? I've changed the coils, ignition control and wires, fuel filter please I need some help