I'd look into the egr as well. I know you've been through the vacuum stuff, but your BL when theyre in the 130's it means the computer is adding fuel. Anything above 128 and its throwing extra fuel into the motor. Especially when the static fuel pressure is already high. Take another look at your hoses and egr solenoid, valve, etc.. something is cuasing the higher than 128 BL's.. get your BL's under 128 and then go from there.
Also there are emmissions chips for Oh Ohh 9's .. believe there is a .bin file on Gnttype.org. If you want I can burn it for you. Typically emmissions chips raise your idle, fan turnon points, etc.. all the things needed to help you pass.
Go back to paragraph 1.. I bet there is something else that may have been slightly overlooked. If you block off all the vacuum ports on top of the TB, your bl's should go down to 118-120. If they stay above 130..you have issues elsewhere.
Didnt say if if you ran top engine cleaner and assured there were no exhuast leaks in the engine compartment. This may be another are to look at.
Are you using a new AC Delco O2 sensor. Maybe you have a bum O2 that doesnt adjust.
Still thinking vacuum leak.. I know brother, I know.. just a gut feeling.
Happy New Year
Julio
PS.. 50's work better
, but for what your trying to do, 009's should pass.
And lastly, using a fuel pressure guage, your fuel pressure isnt dropping after you shut off the car.. making sure you dont have a bumm injector.