Bucking (update)

[PeterBergin at aol.com]

Thanks too all for your suggestions!

Today I took apart and cleaned the MAF sensor and double checked all vacuum
lines, the connection at the MA, and the MM hose again.  I also tested the
TBV, it's OK.  I also but an ohm meter on the RPM/enging speed sensor and it
was within spec's. Went for a test drive and the bucking still presists,
however it may not be quite as violent.  Boost seems a bit less 1.4-1.5 Vs
1.6.  Idle is smooth with an occasional miss every 5 to 10 sec's. Pulled the
codes and still had 21111 and 1111.  Cleared the codes, started the car and
pulled them again and got 4444. AT this time I am still stumped and called
Keith at Anderson Motor Sports and took his earliest appointment (two weeks
out).  I would still like to solve this myself sooner.

Any more ideas?  Thanks again to all for suggestions and satire.

Pete
91 Avant