I need help!!!!

[420a dsm kid]

Hi my name is Robert I own a 1990 eagle talon tsi awd. And am having problems with my car but I just can't find the problem so am asking for help.
Modifications:
2g maf
Rc550cc injectors
Manual boost controller (10 psi to be in the safe side)
Boost gauge
Deleted the egr and vacuums

The problem that am having with my car is that every time I started with the engine cold I get a bad idle. I let the engine worm up and then it's starts to idle around 1100 rpm my vacuum gauge reads 12 of vacuum gauge so I was wondering what my vacuum sopose to be? And also when am driving its starts to hesitate when am givin it gas. I recently did the timing on it and change the exhaust manifold, and the intake gasket ### my old ones where leaking. I also but new spark plugs(cap at 32), fuel filter. And tried to adjust the biss screw but nothing happen. So right know am just getting frustrated with the car. If anybody could help me out by giving me advice or anything.

 

[JusMX141]

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