I would buy the kit to make a purge kit. I wouldn't actually use it in the motor. I would just put a 3rd servo on that would activate the purge. It would look bad @$$!

I have a 100 shot on my camaro. Works great, and I can't possibly see how a rc motor could benefit from nitrous due to the lack of nitro added. AND, nitrous has to be around 950 psi to work correctly. If pressure is too low, nitrous returns to a gas state (nitrous at proper pressure is in liquid form). I don't see how you could accuratly measure pressure of nitrous on an rc car. In my camaro, you can feel the difference between 800 psi and 950 psi.

The timing of your motor would also be thrown off since nitrous raises temprature, your glow plug would probably heat up quicker advancing your timing (the opposite of what you want to happen with nitrous) and you would loose performance there also.

I love nitrous, it just doesn't make sense why you would use it in an rc car.