Originally Posted by E92Fan
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...