Hi,
I see that you have retard,set to retard timing about 6 to 8* for that level of nitros. Easiest way is to hook up a msd retard module to the nitros soleniod so that when it's on ,the timing is retarded otherwise you will have detonation and probably lose the head gaskets.
One question though, why do you want to 'hit' the nitros so hard? A 75 hp shot would act like a mini intercooler and give the most efficiency, probably still blow away the tires.
Good Luck,
Perry.
