RE: Turbo Boost

[Todd Phenneger <phen9461@uidaho.edu>]

Sure,
	Its actually relatively simple.  the actual boost is only bout
7psi on the factory engine.  The 1.4 bar you should be seeing (not 1.3) is
including atmospheric pressure.  So the boost is everything above
1.0bar.  Actually 1 bar and one ATM are Slightly different I guess (again
check out Scott M's page for a break down.  But for most intensive
purposes I consider th;em the same.  
	Anyhow, your seeing 7psi.  Or close to that.  His 1.8 bar chip
bumps it up to 12psi which makes for a very fun car that has plenty of
pwer when on boost.  The factory Press Transducer cant read above 1.95 bar
I guess which is like 14psi so I guess going above 15psi owuld damage
it.  makes sense i guess.  Highly modified cars use a different Pressure
Transducer that can go to 2.5 or 3.0 bar.  1.5 - 2.0 bar BOOST.
	hope that helps  good luck with the refurbishing.

	Todd Phenneger
	1983 ur-q / black / getting a MC
	1984 4000 Turbo quattro (Faster than your average 4kq)
	1987 4000 quattro / Saphire Metallic Blue/ Girlfriend's
	1996 A6q / Volcano / Dads Car
   *****1985 5kt / PARTING OUT!
  *	http://www.uidaho.edu/~phen9461/motorsports.htm
--------
>>><Hi
I'am overhauling my 86  QT and when done I would like to increase the
boost. I've been reading up on doing this which brings me to question.
On my engine factory boost is around  1.3 bar (18psi) but on Scott M.
web site it say not to pressure test the ECU above 15psi  or the
pressure sensor could be demanged. I don't understand the factory boost
is already above 15psi.
Could someone shed some light on this for me.

Thanks Dave Anseeuw
1986 Audi 5000 CD Quattro Turbo
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