You can run a 40 or 50 shot NOS or VENOM nitrous kit on a stock de motor without problem. IF you want to run more than that or want the best performing nitrous kit then the JWT ECU programmed nitrous is the best way to go. Brent > Do I need to have a new ecu to run nos, right now i'm runnin pretty much > all > stock except a k&n airfilter.