[s-cars] Bosch bypass blowup

[Jack Gagnon]

Rich,

I recently bought a stratmosphere bypass and the piece is super!  Not only
foes it look cool with ribs for cooling (i'm not to sure why cooling is
needed though) It appears to be very strong and not likely to fail.  If it
does it has a lifetime warranty.

Not to cheap though ~$140

http://www.stratmosphere.com/hyperboost.htm

Jack

-----Original Message-----
From: s-car-list-admin at audifans.com
[mailto:s-car-list-admin at audifans.com]On Behalf Of Rich Assarabowski
Sent: Thursday, August 22, 2002 9:44 PM
To: s-car-list at audifans.com
Subject: [s-cars] Bosch bypass blowup


This is a multi-part message in MIME format.
--
Just installed a -110 Bosch bypass valve in my '93 S4 following the MTM ECU
upgrade and the recommended 6-turn wastegate adjustment.  Once the car was
warmed up, gave it a few hard on/off throttles and seems like most of the
"honk" was gone with the stock valve -- great!.  Got on the highway and gave
it a hard accel when suddenly heard a "pop" followed by hissing and little
power.  Wow, those stock turbo hoses didn't last long, did they?  Sure hope
the Samco GP hoses will be here soon....

And now I have how to go to the S-Fest at Paul K's without my car!?!?

Was surprised to find when I popped the hood that the new Bosch bypass valve
"blew its lid", the spring and diaphragm were lying on top of the bottom
engine cover.  I couldn't believe how poorly the two halves of the plastic
valve body were attached, very little adhesive..  I'm sure thepartsbin.com
will do good on them, not so sure I want another one just like it if it's
from the same production run.  Might run a bead of epoxy at the seal to
reinforce it, but seems bogus to have to do that to a brand new part.

Anyone else have this happen to them?

I put the original valve back in and I'm back in business.  See you all at
the S-Fest on Saturday!  Paul, I may pop in on Friday night at 10 or so and
have a beer with the earlybirds.

-- Rich A.
   Vernon, CT (next town over to the UrS4 capital of the Northeast -- home
of the S-Fest!)
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