Sup guys i just wanted to know how much H.P will a White brothers E-Series pipe, K&N air filter, K&N jetting kit, and oppening the air box add.. and how much will all that caust.. thanks

 

it will add about 8 horsepower if your lucky. i can't remember the price of the e-series or the k&n power up kit. but i'll willing to bet its about 400 bucks all together.

 

i wouldn't go on peak hp alone tho these mod's are a great and worth while project iv rode like 4 400exs stock and piped never with a WB pipe tho. but i there is a very useable power gain it won't be a monster.however it'll sound cool hehe and change your overall powerband