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This is a wet system
0L BMW F31 328i xDrive N20/N26 2
• Fits OEM and OE-Style Turbos
the ARM N55 Intake is designed with an open-ended bracket to keep the filter stable and secure during aggressive driving
• Filter Clamps
N54 BOV LINE UPGRADE n51 This is a wet systemHIGHLIGHTS Allows for 1 4" Vacuum Line from MAP to BOV Prevents Surging and Over Boosting Ensures Proper BOV Function Simple 30 Minute Installation PROFILE The ARM N54 BOV Line Upgrade will help your BOV open and close completely and quickly. The ARM N54 BOV Line Upgrade allows you to replace the standard 1 8" line with a 1 4" line, doubling the size to allow ample pressure. Upgrading the diameter of the vacuum line running to the BOV ensures proper