moby i have been around tons of sleds with NOS and never saw any problems, but the key is just said earlier, find someone that knows what they are doing, i have ran nos on my own sleds and never had a problem. all the ones i have been around have been 25hp hits, the one i have is set up for 25hp but you can set it from 15 -30 i believe, with all the work you have done to your bad ass toy it will hold nos no problem, just get it done by someone who is smart in that area.