I got a 01 banshee the onlything i have done is i put a boostbootle on and thats it all i do is trail ride and for long periods of time don't race at all just ride trails i was wondering if bought a impellor to replace the stock on does it really work . Just trying to keep the bike cool never overheated just trying to prevent and keep the engine around for a long time. Another question if i keep the bike stock how long does a stock engine last and i don't ride everyday but when i do long periods of time like 4 hours at the most.. Would a bigger radiator be over kill???