For those of you who don't know and maybe able to help me and for those of you who do know... I have an 05 LS V8 w/ a Zex nitrous system 50-100 wet shot, WBC (The WBC is only being used to shut off the N2O passed 12.1, I will not be using a window switch to engage at a certain RPM, i will be doing it by feel of the peddle), XCal, and minor mods, Everything is hooked up and spraying...But for some reason it engages the N20 at 1/4 throttle (which is like 2000RPM) instead of WOT.. I set the management box on the ZEX over again like 3 times to engage at WOT and it sets up like it should, i did it exactly the way it says to, but still it does it at 1/4 throttle. I called ZEX and they were the ones to tell me to set the management box again. I called WBC and they set me up to turn off at 12.1... I've run out of people to call so I need any help i can get, please.... This message is going to all the forums including the guy who installed the system. Is ther anything else i would need to buy to be able to get WOT?....anything will help at this point...thanks guys!!