I would setup the solenoid as it was before and run 3 psi again. At least you can have some boost in th mean time.

The aero can check boost. Setting is called map in hg/psi.

You will probably want a cat or at the least, keep your rear o2 sensor because you have a 2001. They like to run a cat diagnostic that dumps fuel killing fuel economy if you dont leave the rear o2 in place.