which pipe to use

[quadman 05400ex]

my 05 400 needs to beat my buddy 03 400ex and i want to no ahich pipe i shiold use my yosh with out the saprk arrest or my DG oval full exhust my 05 is jetted for the dg and has a k&n filter on it whick pipe should i use.:)

yosh its not that loud but it adds more hp

[ImWhite]

every1 is going to say yosh!
but since u have a full system already id keep it on and save yur money for a cam or something!

normally i would say sparks but since u said u alraedy have yoshi

[Franky G]

I got a Yosh and I cant complain about it its a great pipe!!!!

[quadman 05400ex]

the yosh is a slip on and my buddy has a big gun on his