JRO
Well-known member
I had my ECU replaced during the recall, a few months back. My gas mileage decreased (really poor in town), just like everyone else. No big deal. But - I have noticed a 'rotten egg' smell, typical of a catalytic converter problem. It's not constant, and does this primarily upon acceleration. Have others noticed this? Is it common with the richer, replacement ECU, or just an isolated problem of my own?