O2 spacers are a band-aid at best - they simply move the sensor out of the direct gas flow. It's very likely that they will not eliminate the cel.
http://www.bigdaddiesgarage.com/mini-cat-cel-fix.html
This *will* fix the cel as it's a mini CAT itself.
http://www.bigdaddiesgarage.com/mini-cat-cel-fix.html
These things rock - they are basically mini cats (minus the drawbacks) and you will not get a CEL with it installed.
I've had these installed on several Lambo's I've owned with aftermarket exhausts. No more CEL.
Thanks for the pic. I'm going to get my DR-900S installed tomorrow as well as hard wiring my R7. I picked up a Radenso visor clip which I modified to fit my RD... I'm still on the fence regarding whether to mount the RD on the visor... or do a Blendmount.
It sure looks like the Blendmount is...
The issue is that the August update locked our dmes, so, unless you have a launch edition the dme would have to be physically removed and bench flashed.