its not cheap if u use too much nox...but a stock engine should be able to handle 25-50 HP shot no problem stock....i'm not saying it was cheap for the other guy...but u can upgrade the strength of the engine for 2-3,000...and it will be able to handle both nox and turbo...for a few years anyways...but nox is still a cheap HP adder....even if it does blow your engine...i still cant see getting 50 HP for 200.00 straight up...


got my 78 merc with a 250 I6 and i love it.