I can send you a file with vacuum and fuel schematics as well a good explanation of the WU comp functions, but the file is too big to post here. Send me an email and I'll send it to you. Check the thermal valve (right front of the intake, red, two-port valve) for broken or cracked nipples. It sounds like you have a vacuum leak somewhere.
Paul

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1983 380SL
1995 C280
1995 S500 coupe
1990 Mazda Miata
2004 Suzuki Hayabusa