I don't know how well it works but I like the concept. This is made and sold by the same guy I got my angled CEL eliminator from that kept my CEL off for 6 months with a header and 12 months with a turbo.

Instead of just spacing the 2nd O2 sensor away from the exhaust stream, this thing has a mini-cat screen in it. Check it out:

http://www.bigdaddiesgarage.com/mini-cat-cel-fix.html

 

wow, thats a pretty neat idea! although its still spacing it out of the main exhaust stream, you think there might be a CEL for not enough exhaust flow or something?

 

I doubt it. I haven't heard of that happening with really long, restricted and angled CEL pipes like WR and I doubt the little cat-screen makes that big a change. I may need a new one soon so maybe I'll try this and see how it works.