I changed it maybe 2 months ago or so. I'm also running a dyno-tuned Apexi SAFC. I am starting to wonder if the programming somehow got messed up when the battery got pulled for the UIM/LIM cleaning. It looks the same though. My car has to close to 85k on it so maybe the cats are going bad. I'll have to check those out. They still smell new though.

** Mike ** "You might beat me in a straight line, but I'll embarass you in the turns"