I have an nx wet nitrous kit that has been sitting around for probably 4 years now, and i just got my camaro. I dont want to have to retard my timing and lose power all the time to safely install nitrous that i will only use once every great while, so could i run the nitrous without timing changes safely or would i be taking too much of a chance the kit is a gm nx express univeral kit

 

You get a retard box for your ignition and activate it at WOT or at the same time when the nitrous comes on.

 

Problem is, the stock timing is already quite aggressive. If you car has a stock stune, yu really need to take some timing out for N2O use.

Rich

 

Might help a bit if we knew what year/engine he was aksing about. Or how much he's planning to spray.

 

I don't mean to bring it up if it wasn't posted here. But a forged LT1 burnt some pistons from not pulling timing. Most people are afraid to pull timing for fear of losing power. If done with a ignition box it only pulls while spraying. The ones that get by without pulling timing may actually go faster if they pulled some.

Also just to throw it out there. I have found that the "pull two degrees per 50hp" is not always a safe rule to follow. Just for thoughts my motor likes 35* timing maybee even a little more but on a .075 nitrous jet.(the companies 150 tune/which makes shy of 200hp) My motor likes about 21 to 22* at 24* total timng I lost mph which is the beginning of detonation.

 

Totally true. I did some experimenting with my brother's car on 150 shot. Had his car tuned to pull 5 degrees using the pcm up top. I put in a degree on his nitrous tune meaning he was pulling 4 degrees and he actually ran a tenth slower. So I pulled the timing back out and he went back to the previous time. So proof at the track that pulling timing on nitrous can actually improve your times not hurt them.

 

I have done a lot of dyno testing with my system and agree that reality backs up theory. Max power timing for nitrous is going tO be less advanced compared to NA. my own combo makes max hp with anywhere from a 100 to a 200hp shot with 4 degrees of retard. More or less and power drops off.

Rich

 

Pull timing to start out. My 685 box comes on when the nitrous is armed. With stock timing mine was set up to pull 8 degrees (extra safe) with the 150 jets. This worked out to an additional 115rwhp on the dyno. On the first of this month I put 2.5 degrees back in and a splash of 104 unleaded. It ran a 10.92, a new best from the previous 11.08, took another .5 degrees out and ran a 10.89 with another 1 mph.
Don't forget the TR6 plugs too.