I think the inserts will be nice because I ride in an area where you WILL get a ticket if your bike is too loud. But, if I want to uncork it and ride somewhere else that doesn't have any restrictions then so be it. It fits well for what I want to do.

 

promise?

 

you have to rejet it to make it run good with the inserts.

 

Ok.. after a chance to ride my bike with the Yosh and inserts... here's my findings.

The pipe alone without inserts will make way more power than if you're running inserts. I've got a huge lean spot especially on the bottom end with the open pipe. There's no question. I kinda figured this but the small insert is about equal to a stock pipe power level wise.. maybe just a touch more.

I haven't messed with my jetting at all and therefore am just running the small insert until I get more time to play with the jetting.