Thread: 1M Mods ongoing
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      08-15-2012, 08:17 PM   #180
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Drives: 1M
Join Date: Mar 2011
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Originally Posted by Smiley1175 View Post

Did the CDV delete on the 1M make much difference?
I never ended up doing this on my 135 and the gearbox feels completely different in the 1M.
I actually didn't think they'd have it on the 1M.
Yes, 1M had CDV. Some swear by this mod. I did it on both my cars and didn't notice much. I think it depends on your clutch technique. The clutch take/release points feel more predictable, but don't expect a night and day change.

1M has the N55 135i transmission, not the 135i N54's.

For $25, easy mod. If anything it will make your clutch last longer. It puts less strain on the clutch and more on the rest of the driveline from what I have read, but I could be wrong.
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