interesting boost issue on my 200TQA

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hello again, all.   before i forget, the car in
question is my dual-knock-sensor, MC-equipped
1989 audi 200TQA.

last week i had the spring/ECU mod done, and what
a difference in power!  i'd been building myself
up for it for ages, and i was not disappointed.

however, i seem to have developed a boost leak
somewhere.  what's happening is as soon as i'm
showing 1psi of boost or greater, there's a
non-mistakable sound of air rushing out from
somewhere.  it's the exact same sound as when the
intake manifold boot gives out.   the one on the
car is a new aftermarket item that has been on
the car for only about a month - but it's fine.

i thought maybe the intercooler?  but the strap
is holding tight, and i can see no signs of
leakage.

the other boost hoses have been inspected, but
not off the car, as they are a bit difficult to
get to.

when the mods were first done, my boost guage
showed a steady 16psi of boost.  the next day, it
showed 11psi.  now it maxes out at about 9.  to
say it's driving me nuts is an understatement.

oh, and the car now consumes a whole lot of
coolant.  keep in mind, it seems to start and
drive just fine, and all of the plugs are what
can only be described as a normal colour.

compression test to follow, but sicnce the car
runs so smoothly, i'm going to assume on the side
of hope that the 4000km old head gasket is fine.

anyways, if anyone has any input, i'd love to
hear it.  

thanks again!

jason
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