For some reason the nitrous only works the first time i hit wide open throttle. and than when i go to hit it again, the nitrous doesn't inject. I reset the NMU and tried it again, and it did the same thing. Anyone know whats wrong?

 

bump

 

is it possible your line is freezing up and/or selinoid sticking?

 

The line is not frozen because it does it when there is no nitrous running through the lines too...I am going to call the zextek line today and find out whats going on...

 

I think its cuz your running too lean at that time. I dont know much about zex but i'm pretty sure it wont work if the comp can read that ur to lean for the nitrous....i could be wrong though

 

if your plugs look ok and everything, maybe call zex? see if they will exchange your nmu?

 

I sent my NMU back and am waiting for a phone call from them...I will let everyone know. I might have been running lean, but I had my Vafc set at +10 across the board for fuel. I also just replaced my plugs with the Zex Colder plugs and 8.5 mm MSD's