computer controlled turbo technology

[isham-research.freeserve.co.uk at pop.pol.net.uk]

>>This suggests to me that Audi found the intercooler itself to be
>>the radiator of the whine.  Their change certainly works - there's
>>almost zero turbo whine from the MB or RR ur-quattros.

> that looks like a quite a restriction.
> we don't have that IC in any us models, although i would love to convert my
> 86 avant w/kg to that ic...

That surprises me, but it doesn't necessarily mean you don't have the
silencer (or 'sound absorber', as Audi more correctly refers to it)
in later intercoolers.  It's present in the MB and RR intercooler but
not broken out as a separate spare on ETKA.

This is something to watch for, BTW.  Take the example of the steering
wheel fitted to the later ur-quattros - it's the same as the one fitted
to later ur-quattros.  ETKA doesn't break down the steering wheel, so
if you snap off one of the posts the theoretical answer from Audi is a
new wheel.  Go to the 200TQ pages, and you can buy a post for pennies.

--
 Phil Payne
 http://www.isham-research.freeserve.co.uk/quattro
 Phone +44 7785 302803   Fax: +44 7785 309674