N54 BOV Line Upgrade For BMW 1M, 135i, 335i, E89 Z4, E60 535i 428i (F32) 3rd gear runs

3rd gear runs

Chassis: F20 / F21Compatible Models:

reliability

The ARM S58 Midpipe not only increases overall exhaust volume but also transforms the tone into something far more distinctive than a standard G80 M3

N54 BOV Line Upgrade For BMW 1M, 135i, 335i, E89 Z4, E60 535i 428i (F32) 3rd gear runsThe 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 BOV function. With a smaller 1 8" line you can experience surging or over boosting if the BOV is not activating properly. HIGHLIGHTS Allows for 1 4" Vacuum