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      08-31-2012, 11:28 AM   #8
BADS335
First Lieutenant
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Drives: Montego 335i E90
Join Date: Sep 2010
Location: Chicago

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Quote:
Originally Posted by shiv@vishnu View Post
Yep, your boost is fine and smooth. If the knock retard is persistent when running 100oct, then it's unlikely to be an issue with software/tuning but rather a hardware issue. Could be as simple as a problematic plug/coil or as irritating as carbon build up in your valves/on your piston. When was the last time you changed plugs? Ever done walnut shell bashing?
I just did the walnut shells and plugs a couple months ago. I would hate to swap out all the coils to find out it was not a coil issue. One is fairly new as one did go bad.

Any other way to diagnose the KR without swapping hardware?