Did you already have 1 stage and made it a 2 stage? What size HP shots are using? How are you turnng them on? Are you using a RPM window switch?
thank you still have a few brackets to finish am using the zex as the 1st and the dynotune for the 2nd. i will start with them both at a 50 shot and work my way up. using a dynotune 2 stage window switch and have a zex single also if needed.