Arrow Cat Elm pipe M4 exhaust

[idanny]

Is anyone running the m4 exhaust with the arrow cat elm pipe. Will this fit, pretty sure it will. I am just wondering if I will have enough back pressure?
Would I need a powercomander if I did this?

 

[JAY]

1. Yes, it will fit.
2. No, you do not need a PCIII. Its a good idea to eventually get one though. Optimize your bikes performance.

 

[idanny]

What about the back pressure, without the cat will I not have enough?

Would I have to get a custom tune for the m4's or is there already a map for them?

 

[reiobard]

probably want to get a custom map, but they have a lot of pre made ones that would probably get you close enough until you can pony up and get a custom one.