View Single Post
      01-05-2013, 11:18 PM   #32
benzy89
Banned
 
Drives: '08 E90 335i
Join Date: Jan 2012
Location: Northern NJ

Posts: 2,396
iTrader: (3)

Garage List
2008 BMW 335i  [3.75]
Quote:
Originally Posted by darkrider View Post
Does the OCC eliminate the need for walnut blasting on the N54's altogether, or does it just prolong the inevitable? Is the BMS variety the most reputable, or are there other cheaper effective solutions?
The OCC wasn't designed to eliminate the need for walnut blasting, but more to prevent oil blow through from clogging up (and reducing the efficiency) the FMIC/CP/DVs or BOV. The PCV on the N54 really doesn't seal that well, so the OCC was designed to filter out the oil vapors before they clogged up other things further down the intake tract.

The BMS OCC is the #1 OCC & the only one "approved" by Rob Beck for use with his turbos
benzy89 is offline   United_States
0
Reply With Quote