Guys becareful, I was running Nitrous for a long time without a chip. After I installed my chip, BOOOOOMMMMM, there goes my motor. No it really didn't blow up, it just melted my 4 of my spark plugs, and 4 of my intake valves.
The reason it was the chips fault was because it remapped the whole fuel curve to run a little leaner and it bumped the timming which produces more HP. Which in a stock car, thats fine. But not when your running Nitrous. You want just the oposite, more fuel and less timming, like 4-6 degrees timing at idle.
Hope this helps, I just don't want anyone to fall in the same hole I did.
May you fly low and fast
rest in peace JL