Has anyone ran a 2.1L WBX with the CAT Bypass Pipe?
http://www.busdepot.com/039251058

I've referenced this blog on Samba.
http://www.thesamba.com/vw/forum/viewtopic.php?t=389018

Can't draw a clear conclusion, looking for input from direct experience.

Are there any issues which should be considered "pros vs. cons" to running a
2.1l with a CAT By-pass pipe?

I know that a Bung will need to be installed in the pipe to accommodate the
O2 sensor, but will the O2 still send the correct signal to the ECU?

What has been the experience of the elimination of back-pressure by running
without a CAT help the HP and MPG?

Note: the vehicle is not tested for emissions, so this is not an issue in
our state. realize resale could be impacted (but will keep CAT on hand for
that)

Thanks!

Jack