[s-cars] Fw: Hoppen Stage IV - boost (or lack thereof) issue

[Ingo Rautenberg]

Marc,

I think I know --  something similar happened to me at Road America last
year.  Plus your  boost readings are the giveaway IMO -- check the hoses to
the ECU and fittings/connections from the ECU to the boost gauge (assuming
you have set your up that way).  I'm guessing you have a break/ leak there
somewhere.  Mine was fixed with a replacement boost line (min broke/kinked
at the gauge fitting).

-Ingo
'91 200q20v...Slightly modified
'83 Urquattro
('90 v8q RIP)
http://hometown.aol.com/quattringo/index.html

----- Original Message -----
From: "Marc Weiner" <marcweiner at attbi.com>
To: <s-car-list at audifans.com>
Sent: Sunday, September 15, 2002 8:48 AM
Subject: [s-cars] Fw: Hoppen Stage IV - boost (or lack thereof) issue


This is a multi-part message in MIME format.
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[ Picked text/plain from multipart/alternative ]

Hey all, don't post often.  I have a 94 S4 w/ Hoppen Stage IV (est.360hp)
RS2 turbo, exhaust man., injectors, lehman re-worked cyl. head, lower
compression pistons, lehman stage IV chips (same car written up in EC w/
Frank "Don" Amoroso, Mark Hunter, etc.)  Anyway, I was doing a typical
commute to Denver from Ft. Collins and somewhere in the middle of it I lost
all boost.  Car seems to be running on just the 20V 5cyl. w/ no turbo
assistance (or maybe very little).  I have gone through all the hoses (not
getting any wooshing sound -like its blowing out somewhere BTDT many times
(have all 3 of the samco sport hoses and and the upgraded adjustable (metal)
WBV from Dave Jones.  I know what it sounds like when a hose has popped off
and that is that the case here.   I am getting absolute 0 reading on my TDO
0-30psi boost guage (needle won't budge even on full throttle) - car had
been consistently making 25-26psi at full throttle overboost.  There are no
warning lights coming on.  Car had been running flawlessly, however, I do
have 180k on the clock.   Any ideas????- could it be an ECU or pressure
sensor problem (the ECU has a 3.0 bar pressure sensor/transducer).  Thanks
in advance for any help. . . .I am stumped.
Marc Weiner
Ft. Collins, CO

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