Low Boost Issue

[jalexmichaels at netzero.net]

Folks,

After reading through Mr. Mockry's site, and some other general info on low boost, I am still at a loss as to where to start looking.  

Other than the car being obviously low on power, and now not making more than 1.4 bar on the stock gauge (consistent 1.8 during hard acceleration before), the car has NO other running issues; no stumbling, poor idle, stalling, etc.  The car does have IA Stage III chip.

Any ideas would be appreciated,

Jacob Michaels
Portland, OR

200q20v 145K
1987.5 Coupe 245K
2001 Passat Wagon