My GX threw codes P0420 and P0430 recently. I'm trying to determine if the root cause are actually the cats or not. Both banks of cats failing simultaneously seems suspect, so I'm assuming that those codes are being thrown because there's a problem either somewhere upstream or with one of the O2...
I saw some forum posts about Steve’s platform (Mountain Passes Off-road. - https://www.facebook.com/Mountain-Passes-Off-road-198636867631758) earlier this year, so figured I’d give it a try in my 2006 GX470. I want to keep my gear that I store in the back from becoming projectiles should I get...