[timwu]

I just installed a TOR exhaust on my 2001 daytona 955i and i've noticed this small rattling noise when its idling and during low RPMs. I remember reading about someone who thought this was a spark plug knocking, but someone corrected them in saying that it was the cam chain tensioner. So if that's the case, is this an easy fix? How much should i expect to pay at a dealer?

or is this something completely different?

 

[bradtx]

timwu, If you didn't hear the noise with the quiter exhaust then it's likely related to the new midpipe and can. Has the ECU been remapped? Maybe a lean condition.

Brad

 

[timwu]

no, it hasn't been remapped yet. I was going to get it remapped tomorrow, but the thing is, I did hear it a little bit with the stock exhaust on. It just wasn't as apparent as it is now. I'll get the map done and update you guys on the condition.