Ok so I have a couple of questions about piping I have an 05 400ex stock air filter K&N powerlid with 170 main. I want to get a new pipe but damn there are alot of them out there. Has anyone tried the Looney Tuned dual for the 400? any help apreciated.

 

hey i have a 01 400 with luney tuned duals they kick *** give more power all threw if i were u thow i would chuck a k@n filter on er and go up to a 16 front she will have enough
to pull it it will go bout 72-74