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Boost Pressure Control Valve Replacement
 

Pelican Technical Article:

Boost Pressure Control Valve Replacement

Jared Fenton

Time:

1 hour1 hr

Tab:

$80

Talent:

**

Tools:

Hose clamp pliers, Philips head screwdriver, cutters

Applicable Models:

A6 2.7T (1997-04)
A6 2.8 (1997-02)
A6 3.0L (2002-04)
S6 4.2 (1997-04)

Parts Required:

Boost Pressure Control Valve

Hot Tip:

Use small hose clamps to secure new BPCV

Performance Gain:

No leaks or faults in turbo system

Complementary Modification:

Engine tune up

The boost pressure control valve (BPCV), also known as the N75 valve, is used to control the wastegates on the turbos in your 2.7T A6. Over time, the BPCV can wear out internally and prevent the turbos from functioning correctly. Replacing the BPCV is very easy and should not take more than an hour.

Remove the upper engine covers to access the BPCV. See our article on Engine Cover Removal for more information

Shown here is a new boost pressure control valve available from Pelican Parts.
Figure 1

Shown here is a new boost pressure control valve available from Pelican Parts. Replacement is easy and should take no more than an hour.

Loosen the hose clamp (green arrow) holding the intake air boot to the MAF sensor.
Figure 2

Loosen the hose clamp (green arrow) holding the intake air boot to the MAF sensor. Then use a pair of hose clamp pliers to remove the clamp (purple arrow) holding the air boot to the intake manifold. Remove the air boot.

Lift the BPCV off the tab on the intake manifold.
Figure 3

Lift the BPCV off the tab on the intake manifold. Raise the BPCV enough to access the clamps (green arrows) holding the air hoses in place. Cut the hose clamps with some end cutters and slide off the hoses. Be sure to transfer the rubber boot to the new BPCV as well. Installation is the reverse of removal. Be sure to use new hose clamps on the vacuum lines.


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Page last updated: Thu 12/14/2017 03:23:05 AM