Quote:
Originally Posted by TheHaze
Did you by any chance disable the cold start cat heating in bm3? I did by accident when I flashed one time and noticed a rough cold start idle right away. I leave it enabled now and the issue hasn't been back since. Just a thought.
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Yes, I have had the cold start cat heating disabled on my car since late 2020. With a high flow DP the car sounds like a tractor and is so loud on startup. I haven't had issues like this with the rough idle before on this (Stage 2 ACN 91) or any of the other BM3 tunes I have run, but I will trying turning it back on and see if that is related to the issue.