BoostedFitz

Here's the high flow cat version

tractor man

I have the Mach 46 and catted downpipes. I love the sound especially compared to the mr400 which was way too loud for me. I'm even considering going back to stock downpipes to tone it down a little more. It also seems the combination of the exhaust and downpipe is throwing a cel. Might just be mine though as it seems others don't have this issue.