Dumpvalve on S2 (Stock)

**pixsaudisex2** · 9 February 2013, 13:53

I had one where the rubber seal had broken meaning it was ****..

**UrS4boy** · 9 February 2013, 15:47

By-pass valve information

Originally posted by asperilla

is there anyway the installation of a dump valve on a S2 could reduce power?(car is loosing power) Installed incorrectly? Incorrect location etc...

Or not working properly? The answer is yes. The stock by-pass or diverter valve (Audispeak ="Over-run cut-out") (regardless, it is not a "dump" valve) is intended to help keep the turbo spinning when the throttle valve is closed during normal shifting. Without the BPV, the turbo will tend to slow down or stop (stall) during a shift, resulting in a loss of power when you come back onto the throttle.

More info including PNs and orientation here:

quattroworld.com Forums: By-pass Valve Info

http://forums.quattroworld.com/s4s6/msgs/20994.phtml

The Audi Enthusiast website. Forums for all Audis including A4, S4, A5, S5, A6, S6, allroad, A8, S8, TT, R8, Q5, Q7, 4000, 100, 200, v6, v8, vintage, local forums

**andy10v** · 9 February 2013, 15:48

The installation of an atmospheric dump valve would make the car run like ****.

Or are you talking about the original diverter valve? It can leak air from the pressure side.

**asperilla** · 9 February 2013, 17:50

Originally posted by andy10v

The installation of an atmospheric dump valve would make the car run like ****.

Or are you talking about the original diverter valve? It can leak air from the pressure side.

im talking about one like this

this has been blocked off

if you click on the link you will see a pic i just took.

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http://img534.imageshack.us/img534/5989/img00779201302091953.jpg

**Rusty** · 9 February 2013, 18:13

Picture doesn't work. Sounds like you've installed the wrong type of dump valve. Put in a stock unit and it'll work properly. If you're after noise then get an adjustable one like those from GFB

**asperilla** · 9 February 2013, 18:24

Originally posted by Rusty

Picture doesn't work. Sounds like you've installed the wrong type of dump valve. Put in a stock unit and it'll work properly. If you're after noise then get an adjustable one like those from GFB

click now http://img534.imageshack.us/img534/5...1302091953.jpg

I did NOT install this. i got the car like this...

**Rusty** · 9 February 2013, 18:26

Apologies. Picture is so dark, I can't see what's what.

To instal OE valve properly, boost pipe should be on the side, base should vent to inlet hose and the top nipple must connect to the im via a small vacuum line.

hth

**UrS4boy** · 9 February 2013, 19:01

Exterminate. Exterminate. Exterminate

Dumpvalve on S2 (Stock)

Dumpvalve on S2 (Stock)

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