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      05-02-2012, 11:53 PM   #2
First Lieutenant
hurricane56's Avatar

Drives: 2006 325xi
Join Date: Jun 2010
Location: Bay Area, CA

iTrader: (5)

Interesting how it took CA that long to implement the ODBII emissions test since the CARB regulatory agency is usually at the forefront of implementing new standards.

Regarding catless headers, I heard that running them with o2 simulators may suppress any codes and CEL indicators, but will usually report back to the ODBII emissions readiness monitors as "not ready". Most states will allow your vehicle to pass with one readiness monitor not ready, but we should all double-check before cutting our cats of the headers.