Quote:
Originally Posted by vtl
N55 has a good PCV system. A catch can in an N55 is just clutter in the engine bay that does nothing. I think that because the N54 had quite an average PCV system its easy to re-purpose a product and market it to the newer engine too.
The BMS catch can is a high flow design as it would impede the PCV system otherwise. A high flowing catch can does not catch much oil. Even on the N54 it doesn't catch much oil
|
Stole my thoughts. Oil blows right through these aftermarket cans.
I run my Mishimoto can in reverse which has a screen on it that provides something for the oil to collect on before air passes through the can. This is the only way I've ever been able to get it to catch ANYTHING. Oil still gets through and coats the inside of piping, btu it's better than nothing. Its a low cost/high mark-up item for vendors.