[Biturbos4] testing the turbo bypass valve(s)

[Witte, Michael J (HPFS)]

TT replacements work as good, if not better than the stock ones, especially on Chipped vehicles, if your run a search on AW, the S4 forum, with the 710's in the search line, you'll find a lot of reading material.
 
Hope this helps.
 
Michael.

-----Original Message-----
From: j y [mailto:jimnetpa at yahoo.com]
Sent: Wednesday, March 17, 2004 8:13 PM
To: Witte, Michael J (HPFS); David Kavanagh; Bi-Turbo Audi S4 Audi Fan Group
Subject: RE: [Biturbos4] testing the turbo bypass valve(s)


how well do the TT replacements work on chipped cars?
I have stratmosphere DVs - there is a noticeable difference btw them & stock - holding boost. I notice this on both my S4 and Porsche 951 (944 turbo). Both cars are chipped.


"Witte, Michael J (HPFS)" <michael.witte at hp.com> wrote:

or just get the TT replacements, IIRC the 710's, IMHO, not worth it paying $150 more for Aftermarket ones...

-----Original Message-----
From: biturbos4-bounces at www.audifans.com
[mailto:biturbos4-bounces at www.audifans.com]On Behalf Of j y
Sent: Wednesday, March 10, 2004 11:36 PM
To: David Kavanagh; Bi-Turbo Audi S4 Audi Fan Group
Subject: Re: [Biturbos4] testing the turbo bypass valve(s)


bad bypass valves can cause turbo overspin.
if you plan on chipping the car - get "aftermkt" bypass valves - forge, bailey, etc..


David Kavanagh wrote:
What's the proper procedure for testing the bypass valves? Looks like 
mine are stock (and original judging by the "use-once" hose clamps). 
Would failure symptoms be obvious when driving the car? I understand 
they could fail where the don't fully close. Could they be the source of 
an intake leak?

David


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