I am happy to report that after I had all of the exhaust lifters, and the cam shaft replace in my 2006 E90 at the 13,000 km mark, the sound has not returned. I am now just over 30,000 km, and engine purrs like it was brand new, with no noticeable change in power etc...
Fingers crossed.
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2006 Canadian E90 325i | Monaco Blue | Black Leatherette | Titanium Trim | Premium Package | Xenon Active Headlights
____It's ALL about the wraparound 30% tint, Baby!____ -->Soon to come...SUBWOOFERS!<--
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