as long as its done right its just another way to make some horse power. Nitrous as long as you don't get addicted to it "changing the jets to up the shot" should never cause any problems. Another good thing is that when you spray nitrous especially on a higher miles car it cleans the carbon out of the motor and head. That makes your car run a little nicer after you sprayed. Im not looking to go spray a 200 shot and blow up and ruin the quality of my car. I just want nitrous for a little something extra if I ever want to use it at the track. I do not plan on spraying this thing every single time I get on it. More then likely the bottle wont even be in the car 90% of the time.