I haven't use the nos yet still tiing to dial it in and get used to the override trannyon motor the fastest I went was 7.1 @ 92 leaving about 60 of foot prints on the track I still have to play with gearing and wheelie bar height I should get it in the 6.7 or 8 range with out nos it is a low compression motor built for nos 125 psi once I push the button I have a decent amount of nos being use I had to by a 5 lbs bottle so I can at least get 4 or 5 runs out of it