Of course that's a function of mixture control and other sources of
contamination.  Unfortunately some cats get replaced because they failed but
root problem was never addressed.
Not saying the Magnaflows are gold, just the data could be skewed some.

-----Original Message-----
From: Vanagon Mailing List [mailto:vanagon@gerry.vanagon.com] On Behalf Of
Jeff
Sent: Monday, March 30, 2015 12:54 PM
To: vanagon@GERRY.VANAGON.COM
Subject: Re: Cold Air Intake

The GW CARB approved cat is actually a Magnaflow cat.

FWIW... I have seen a 50% failure rate on those cats over the last few
years.  They seem to fall apart inside.  The good news is that they have a 5
years warranty.

Cheers,

Jeff