[Prev][Next][Index][Thread]

Re: E36 M3 .. Vibrations & clunks

Jim - The vibration or buzz type noise makes me think of a catalytic 
convertor shield that is loose or cracked.  I'm not sure if your M3 has 
the double-wall exhaust tubing but if it does it is not uncommon for the 
outer wall to buzz against the inner wall at higher rpm's.  And speaking 
of higher rpm's, my first good experience with your chip and it's new rev 
limit in my '88 M3 went like this - WOT to redline in 1st gear, slammed 
dunked 2nd gear, rear tires lit up to where I (honestly) had to lift to 
kept car straight...wow!  Anyway, no real idea on the rear end clunk 
unless gear backlass became excessive - doubtful.  I wonder if your car 
has the 2-piece flywheel?  I've heard some clunk type noises form the 
2-piece ones on 325's.  

Stu Raike
St. Louis