thought I had it all figured out.

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

> Lately turbo lag seems to be more than usual and power seems to come in
> steps especially under boost.  For example, heading up a hill, 3rd gear and
> I give it plenty of throttle, but not WOT, and hold the throttle steady.
> The car accelerates a bit, pauses (not an invisible brick wall, just seems
> to top out for a sec) then a spurt of power to a higher speed, pause, spurt
> of power even higher speed and repeats.  All of this just on the way to
> 80km/h.

Superficially, it sounds like the metering head.

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