I've done some searching and haven't found a definitive answer.

I've read conflicting things regarding a custom exhaust on the f4i and back pressure. But basically, I want to set up an exhaust that does not mount to the passenger foot pet bracket.

Based on cost and simplicity, the ideal set up would be Moto gp style. My concerns there would be sound (too loud) and back pressure. I currently have a delkevic 14" can and a could tolerate more sound, but I don't want anything too obnoxiously loud. I've read that those Moto gp set ups are around 95 to 105 decibels, but I don't know what my exhaust measures so I have nothing to compare it to.

It would be easy enough to bend up some pipe and make a buell style exhaust but I still have the issue of whether or not that will be enough back pressure.

So, is back pressure something to be concerned about and does anyone have an exhaust recommendation that does not need to mount to the passenger peg bracket?

 

I have a full hindle exhaust and it is about 105 - 106 decibles. When it is cold it starts off at about 112 then comes down. I have a complete Yosh in the box as well that I still have to slap on one day to hear it but I think that the Yosh would be a little louder. Hope this helps.

Ken