Bypass valve

a.k.a. "BPV" or "DV" (Diverter Valve)

Valve which relieves charge pressure by venting air back into the ambient pressure intake tract.

Prevents turbo surge but preserves LTFTs, since measured air will still eventually enter the combustion chamber.

All street cars that use MAFs upstream of a charge pressure relief system should use BPVs rather than blow off valves.

Variants: (work in progress, part numbers needed, should reformat into table)


 * 710A original? (OEM for 2001.5?)
 * 710N updated (OEM for which engine?)
 * 710P updated again (OEM for RS6?). Has a reinforced silicone diaphragm, and has brass guides holding the sealing lip in alignment with the seat. The valve begins to open at ~ 6 in-HG vacuum.

possible prefixes: 06A-145-710 06B-145-710 034-145-710