I have a 2.1 zvh, EFI running fairly big spec..

Now normal driving the car is fine, BUT as soon as i want to launch the car say at pod.. (Which i did last sun, major embarrassing) it doesnt want to do it..

It just pops and farts and misfires.. I have new leads,plugs and pump in but it still plays up..


Any ideas??? Coil pack maybe??