[tsdavis]

I drilled 8 - 1/4" holes in each cap. This is considered bad for your warranty, but I really don't think it's gonna hurt it. Wife is pretty easy on her bike.

No map change, but I did have to adjust the idle.

I wanted to add stage 1. She said no. So, I drilled them. It's not much louder unless you really hit the throttle. Sound difference is notable though.

Perhaps someone here can provide more info.

 

[tsdavis]

Do NOT completely remove the baffles. Someone here can give more detail as to why, but I've heard that the engine relies on some back pressure from the baffles.

No baffles = potential engine damage

I like the stage 1 drag exhaust the best. I used those in an 07KP.

What year bikes are talking about here? Big difference in suggestions with the 08 and up models.