Owner reviews for catalytic converter

Coworker made this for me after I spent the whole day replacing the cat on a new XC90

I had AA with Magnaflow 200s for about 30k miles on mine when I had it. UM tune, intake, TT cams. No LC or NLS though. But didn't drive the car like a grandma but no track days. Never heard a rattle.

So anywho, I ordered a replacement and bolted everything back together. Cat put me slightly above budget, but hell... half the car is new at this point. Also, I got 34mpg over ~150 miles of test driving to and from work before I decided to investigate the cat; that's pretty good for what amounts to a 16 mile round trip with the AC going.

I found a guy that installs them for a good price and he uses 'AP' brand cat converters. He says those have been sucessful for him in holding off the dreaded P0420 code WITHOUT installing a J spacer.

Direct fit, Magnaflow p/n 23710.

Might as well go with a magnaflow high flow from performance peddler; costs less than an OEM one anyway. I think i paid $110 shipped.

just installed my 2.25 inch catback and my new dp+cat becuase i needed to replace it, i used a magnaflow high flow cat with a tt with borla muffler catback, i went to put in my 02 sensor but found out the threads were damaged so it wouldnt go in, so i just put in the plug that came in the 02 hole on the cat and started it up becuase i wanted to hear how it sounds, and quite frankly it sounds awful, much louder than expected, rev sounds awful and comes back down to idle with numerous backfires.

Wednesday night I went out and noticed the CEL came on and stayed on, so I took it in this morning and was told the fault code related to a bad catalytic converter! A new one is on order and in the meantime I'm driving a Highlander