I tried one today....I had it pop back through the carb. first couple times till I figured out what the motor wanted for nitrous.........Finally just had to give it lots of short bursts instead of one big one....Plumbed through the Boost bottle....I have another used kit coming, I`m gonna use it as a second stage so to speak....When one runs out just hit the other one....I`ll use them till the novelty wheres off and get rid of them to someone else who wants to check it out for a little fun....Nice, I hit 42mph today! ...big hill...haha