straight pipe

[tex]

new here have a ? if i drill out my muffler and my cat do i need a powercommander? 07 fz6

 

[dako81]

new here have a ? if i drill out my muffler and my cat do i need a powercommander? 07 fz6

In short, no, but to do it correctly, more than likely. I recently put my stock muffler back on, and noticed an immediate gain in part throttle torque and it seems to lift the front off of the ground more easily.

 

[tex]

ill will keep that in mind