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      12-11-2010, 12:02 PM   #10
jippii ensio

Drives: 335i
Join Date: Feb 2009
Location: On the road

Posts: 1,222
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Originally Posted by E92Fan View Post
I've been using a catch can for the last 40,000 miles - it is emptied approximately every 5000 miles.

The car has been running either a remap or Procede for about the same mileage as well (about three years)
Catch can helps, but personally I don't direct even the fumes back to the intake.

Btw. I wonder how bad are some hard driven engines that do not have even a catch can...