my phazer


to see an noticeable HP gains out of a 4 stroke its gonna start at like $400-500 and go up from there. theres a few pipes that "claim" 3-4 hp and also some air intake kits that are supposed to augment the pipes and aslo some EFI reflashing that also suppose to give u a horse or 2 but plan on spending around $150-200 per HP. yamaha has pretty much pushed that motor to the the hp limit without a turbo or super charger.
 
Snow Tech magazine had a nitrous kit in there mag last winter that supposedely really rocked and was'nt that much, but I don't remember how much.
 


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