Keydriver chip windowed nitrous control and timing question.

[Sk8er07999]

I have a question about the keydriver chip and nitrous activation/de-activation RPM. The vehicle is going to be running a 50 to 75 hp shot of nitrous. What I want to know is at what RPM I should have nitrous activated and when it should de-activate. The vehicle is going to keep the stock 7500 RPM rev limit and is going to always be shifted at or around the 7000 RPM mark. So I was thinking have nitrous be run from 4,000 to 7,000? Also for those of you guys running spray what kind of timing should I see when on the spray? I understand having it too advanced could be catastrophic so what's a safe max timing advance? I have heard that when ordering the keydriver chip you can specify to never get more then say 20 degress of advance or whatever. Would this be a good idea? Thanks guys, Kevin.

 

[GVR4592]

4000 to 7000 seems like a good range. Nitrous kit manufacturers reccomend to never activate the nitrous before 3500 rpms's and to never hit the rev limiter with it activated. With a 50 or 75 shot you should pull a few degrees of timing and possibly go to a colder spark plug.