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woolveren
08-03-2014, 08:42 AM
Hello,

I got a new OEM Diverter Valve for my car(98 AEB) from autohuas which was listed for 98 A4 in their website. I have installed it yesterday, and on test drive it was honking nicely upon changing gears/ high revs. Upon research, I saw huge number of threads on DV part numbers everywhere which I did not realize until yesterday. I am now trying to find what is the replacement stock DV part number for my car since most of the existing threads have conflicting details in them.

The one I have received from autohaus is 99311033750 which is a Porsche 911 Cutoff Valve made by Kayser.


Stock DV in my car is 058145710(no A,B,C or N at the end), which is now superseded by 06A145710P. But this is NOT listed for 98 A4 in EKTA. It is listed only for RS6 Avant.


VAG actually lists 034145710A for my car, which is now superseded by 034145710B. This DV is listed for A4/S4/A6 etc.


I know there is another DV 06A145710N which is listed only for audi TT's and some people use this on chipped 1.8t's.


Anyway, I am only looking for stock replacement and it looks like the RS6 DV is what I need to get based on what I currently have in my car. But then Audi lists another DV for my car, so am now confused which one should I get now..

GrapeBandit
08-03-2014, 08:49 AM
http://www.ecstuning.com/Audi-B5_A4-Quattro-1.8T/Search/SiteSearch/Diverter_Valve/

scroll down

woolveren
08-03-2014, 08:58 AM
http://www.ecstuning.com/Audi-B5_A4-Quattro-1.8T/Search/SiteSearch/Diverter_Valve/

scroll down

I looked there, OE section lists 06A145710P and 034145710B.

This is where my confusion is, the one I currently have in my car is the old revision of 06A145710P. But then Audi lists 034145710B for my car in their catalog..

Seerlah
08-03-2014, 09:23 AM
It seems you want to keep your car original, but you should really consider the OEM one from the Audi TT 225. It is just much more stout, as it was built that way for the stock K04 on the TT. There was one in my car when I picked it up and did not know till I went to swap it out for a Forge 007 (chipped ECU time). Ended up just giving it to a forum member (free) who needed one because his stock one crapped out on him.

GrapeBandit
08-03-2014, 09:25 AM
was going to suggest OP just pick up the 710N

woolveren
08-03-2014, 09:35 AM
It seems you want to keep your car original, but you should really consider the OEM one from the Audi TT 225.


I don't know much about RS6 and TT , shouldn't the stock RS6 V8 biturbo DV more stronger than the TT Dv?

woolveren
08-04-2014, 10:39 AM
^^ This above

Anybody know whether the RS6 DV is more robust compared to audi TT DV?

coolgraymemo
08-04-2014, 10:24 PM
Yes. But do you really need something that "stout" if you're stock?

Keep with a 710N.

woolveren
08-05-2014, 07:11 AM
Yes. But do you really need something that "stout" if you're stock?

Keep with a 710N.


I asked that question because 'Seerlah' said above that the 710N is more stout.


So if I got this right, below is how DV's are classified in terms of their robustness.

034145710B < 06A145710N < 06A145710P


If this above looks right, then my question is WHY audi used 06A145710P for 1.8T's until somewhere around 2004 when they knew the DV was an overkill for a stock K03 1.8t

Because, I saw threads in other forums(passatworld,VWvortex) as well where the stock 1.8T DV was the older revision of 06A145710P which was solely used by RS6 and AEB/ATW 1.8T's at that time.

Seerlah
08-05-2014, 03:15 PM
You are thinking too hard. Just get the 710N [cool]

woolveren
08-05-2014, 08:52 PM
You are thinking too hard. Just get the 710N [cool]

haha, you may be right.

I being an engineer, sometimes it is too hard for me to ignore certain facts..[:)] There should be a reason why audi engineers revised 1.8t DV's, which I probably won't be able to figure out from the internet.

GrapeBandit
08-05-2014, 09:00 PM
There should be a reason why audi engineers revised 1.8t DV's, which I probably won't be able to figure out from the internet.so buy all 3, dissect them, and reverse engineer them. problem solved[:p][up]

coolgraymemo
08-05-2014, 11:01 PM
Just install a blow-off-valve.