[philjw]

Based on the various forum threads related to Z4M tunes, it seems a very mixed bag, particularly when folks are trying to compensate for rear O2 sensors that are not there, are behind race cats, etc. Has anyone had success with a tune that not only turns off the rear O2 sensors, but also reports a "ready" state for emissions purposes? Where I live, they use the OBDII test, and I really don't want to have to rip everything out just to pass...

I've installed euro headers and the DKF Section One, with EGT and rear O2's installed in the DKF pipes. My shop had to do some additional work to get rid of a leak, but now all seems well, except I'm still getting a code (P0420). The shop thinks that the DKF cats are not up to the task. In any case, I do love the sound and power bump from my euro headers, but I need to get rid of this CEL. Please let me know if you've found a solution.

Also appreciate any other feedback on tunes, assuming it meets the first requirement. E.g., smoother power delivery, dyno results, etc.

Thanks in advance!