Just had this issue happen last night. Driving up a grade and the car did not seem to be pulling like it normally does. The RPM and boost gauge seemed correct, but the speed was lower and car was sluggish to accelerate.

I have reviewed the FAQ and most of the diagnostics seem to talk to the earlier turbos.

If I have a problem with the turbo, would I still register boost on the gauge?

I looked under the car and did not see the typical CAT, is it possible the '92 did not have one. If not where is it, and does it look different? It is a California car.

Any suggestions on diagnostics other than those listed in FAQ?

THansk,

Bill

Have you checked your turbo hoses for soft spots or cracks? You may have a leak that is causing you to lose boost(and power).
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1988 760Tic - electric fan, HD radiator, boost gauge, a/f gauge, remote start, BP7ES plugs, brown top injectors, MBC@10psi - 158,500 1966 M-B 230 sedan - 98,000 1982 Rx-7 - 201,000

I had similiar symptoms with a 91 940T.....NO ONE could detect it, til I found what the deal was by accident....the foam on the inside of the airbox was flaking off and plugging up the AMM. Something to check out. I remove all of the foam on all of my cars since then.

On the cat - if you HAVE to have onne in your area, get a Catco free flow - EXCELLENT and cheap (Summit - about $49).