airbox mod

[Rhyno54]

Since I already have a k&n air filter and two-brothers slip-on and i decide to go with a arrow header to make it a full exhaust do i have to do the air box mod or can i run the stock air box with the air filter and the full exhaust then have the ECU flashed/tuned.

 

[cmurder]

you dont have to , but ya want them ponies to breath , if you dont feel like cutting the whole box you can do the 3 hole method does about the same thing ,, since you already have to take it out might as well do it