That Cat may be a smaller diameter/more restrictive than what belongs. While it may reduce performance I don't know if it will affect cruising mileage enough to measure. 

Dennis

-----Original Message-----
From: Vanagon Mailing List [mailto:vanagon@gerry.vanagon.com] On Behalf Of Bryan Feddish
Sent: Wednesday, May 02, 2012 4:26 PM
To: vanagon@GERRY.VANAGON.COM
Subject: Re: Still lousy gas mileage

>> Just some possibilties like maybe leaky tired injectors? <<
Those are new and are 2 years old.

>> I'm only assuming that it's tuned up: cap, rotor, plugs, wires and coil? <<
All of those are < 6 months old except the coil which is 2 years old.

>> Plugged catalytic converter? <<
This is on my “maybe” list. it’s a 4 year old cheap BD one. Maybe I should swap this out just in case. I’ve been stranded by a bad cat in the past....

Thanks,
Bryan