Author Topic: Has anyone upgraded the stock M42 catalytic converter to a high flow aftermarket unit (Read 4687 times)

Cobra Jet · « **on:** May 21, 2009, 09:57:19 AM »

Has anyone removed the large, bulky & restrictive stock M42 catalytic converter and replaced it w/ a higher flowing single aftermarket cat?

If so, what brand/type? What was the inner/outer diameters of the inlet/outlet on the aftermarket for an easy "plug-n-play" back onto the stock mid pipe? Where to buy for a reasonable price?

Thanks!

1991 E30 M42 · « **Reply #1 on:** May 21, 2009, 01:28:52 PM »

magnaflow 2.5" , i replaced my whole exhaust from header back, i also have a dynomax super turbo which sounds like shit

ob_318is · « **Reply #2 on:** May 21, 2009, 02:37:42 PM »

Can someone post a link of a specific magnaflow cat. converter to get. I am looking to do a nice set up with a bosal muffler ;x

1991 E30 M42 · « **Reply #3 on:** May 21, 2009, 11:35:19 PM »

just go to the site and pick a universal to the desired size and options

ob_318is · « **Reply #4 on:** May 22, 2009, 03:39:42 PM »

Easy as that, thanks...

1991 E30 M42 · « **Reply #5 on:** May 22, 2009, 04:27:27 PM »

any exhaust shop can put it on