mtino wrote:I haveStillen high flow cats and stillen dual cat back exhaust on my 2007 z
Well, Nissan won't cover those! You may have to live with it or get some new cats I guess. There's always the outside chance its a bad O2 sensor I suppose, but I wouldn't get on it.
Stillen HF Cat Page wrote:Stillen warrants the product(s) herein to be free of “out of the box” manufacturing defects only (cracked welds, bent or damaged pipe or flange). We strongly suggest you inspect the product prior to installation. After installation the products sold hereunder are without any warranty of any kind. Stillen hereby disclaims all warranties and conditions with regard to the products after installation including all implied warranties and conditions of merchantability and fitness for a particular purpose. Stillen does not warrant against damages or defects arising out of use of the products; against defects or damages arising from improper installation, or against defects in products or in components after installation.
You could give Phase2 and see if you could use this to fix your recurring CEL.
Anyone out there know of a high-flow cat that won't throw a CEL/SES ? I remember seeing one out there that even said it wouldn't throw a CEL, went so far as to put that in ALL CAPS in their ad. I looked for a while but couldn't find it.