just noticed this thread, ive ran nos on my vr, it had 50 hp jets, its noticable when it kicks in, i tried it a couple of times and it spins the wheels up in 2nd when it kicks in. i took it to a rolling road to check it was all running fine for it to go bang on the power run, big fireball and it blew the induction to bits, luckely just plastic bits. not wanting to put anyone off it as i think i had it cutting in too soon and a prolem with the leads which were misfireing, i still have it on the car but havent had the balls to put the bottle back on. ;-)