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

[Igor Kessel]

Marc Weiner wrote:
>
> This is a multi-part message in MIME format.
> --
> [ 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

A snapped turbo shaft?

--
Igor Kessel
two turbo quattros