400ex HP??

[Pur Pony]

Whats the 400ex have for stock HP at the motor and at the rear wheel??


what type of HP gains would I get from a yoshimura race pipe w/ header, K&N, vented airbox, jet kit??

[Smoker]

Go to GT Thunder at this link, they have dyno readings for the 400, it may not be your exact setup but it will give you a good idea. http://www.geocities.com/gtthunder.geo/