I have ran 2 mach 1 and atleast 10 96-98 cobras with 150 shot with no tunes at all and have never blown one up or hurt anything. that is a no bs story ask injectafuel he can vouch for that. also have my 04 cobra with nitrous with a tune for over 2 years now without a single issue and have sprayed it a bunch on the motor tune. I have had nitrous on everything I have had and the only car that I have ever had tune was my 04 cobra. just my experiences.