I installed and tuned my first Impulse turbo kit last week and it is very impressive. With help from Paul at Impluse the Nytro ran great all day. About 20 minutes of tuning and it was ready to go. The sled was set for 10 to 12 psi of boost on pump fuel. The kit is able to go up to 18 psi with race fuel. There is alot of talk about MCX turbos but if you are looking to turbo a Nytro don't do it without talking to Paul at Impulse first. I've been installing Turbos on sleds for about 4 years now, (Boondockers, Mitsubishi, Aerocharger) and this kit is the best engineering and component quality I have seen yet. Started the second kit yesterday and its going smoothly. I will post some pics of the install as it goes along. If this keeps up I might have to come over to the dark side with rest of you Yamaha guys.