I have a B&B catted downpipe right now. I "think" its causing a CEL because the cat is far downstream and has 3000 miles or so on it now. I want to stick with a catted DP because of noise and I dont want to pull the turbo and port the wastegate and deal with CEL's However I am thinking of buying the catted helix DP because I think the bellmouth design would be better than the divorced wastegate. Also the cat on the helis is near the turbo where it should be, which makes more sense.

Should I get the helix or just stick with the B&B? Also is there any performance difference between these two brands or designs?