How much more horse will the wb header give

How much more horse will the wb header give, i already have the wb e slip-on

.5-1 HP gain.
i rode a 300ex with a wb slip-on and header.
then i rode mine with just a wb slip-on and the one w/ the header felt alot better

[400exBro]

If you have the WB slip on it won t fit on the WB header you should of bought right away and you would of got the Megaphone pipe and the header. I suggest you buy a FMF power bomb or high flo header they should fit
Lata
400exBro

I thought it was called a powerbong?????:D :D

[Red Rooster]

we are talking a 300EX here, right? Then the header will work. Your top-end horsepower will be much better with very little change down low. Hope this helps.

Well heck that slip on from what I've read gives ya like 30 more horsepower,,at least that's what all the pipe shootouts and reviews say,,,just keep the slip on..:D