Jim Wolf 420 ecu
 

I've installed a JWT 420 ecu and my z will not idle or run properly where as it did when I reverted it back to my stock setup. as anyone had a similar problem and if so, how did you get your jwt intergrated properly. by the way I was working from the complete package setup: risistors, pump,proper numbered cobra afm, 420 injectors, etc.

Email or call JWT and ask them.