I know there's a ton of threads about this but a lot are super old. My 11 fz6r has the cut off cat welded two brothers can and has no baffle. I have the pcfc and bought it like this. Usually I stay away from stuff other people do but I got it pretty cheap. It runs okay with the 2 brothers map but has times where it pops a little. I know there's some maps that would make it better or even if someone else had the pcfc and messed with the low mid and high range to make it a little smoother and could tell me what you did that be awesome