I think the rule of thumb is supposed to be two degrees for every 50 horsepower of nitrous. I set up an entire Nitrous system that I have not used yet but I bought the timing start retard that piggybacks on to the MSD... It's pretty slick when you hit the button or whatever activates you nitrous solenoid can also send a low voltage to the start step retard and you can dial it back to anything you want... I have a hundred shot set up right now so I have it set at 4 degrees.. it only sees that when I hit the button... "When" again is the optimal word because I haven't had any track time to try it...
