Quote:
Originally Posted by discoboy1
I am experiencing I think a exhaust drone with my 1M.
It occurs @ 2300RPM and 70 mph in sixth gear. it gets noticeably louder inside compared to going 55-60 mph.
I will try to measure with a DB meter over the week-end to see the difference, and will post results.
UPDATED**
I have taken measurements in the car driving in 6th gear from 55-70 mph,
lowest reading I got was 86-87 db, when drone is present I got peak readings of 97db.
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Here are the data from my drone-free 1M:
Average: 87dB
Peak: 93dB
All readings taken at 60-70mph under load in 6th gear, 2300-2600 rpm. 83F temp. Highway.