Is you belt slipping? Are you having a boost leak. These tests now take two people thanks to electronic throttle bodies.

 

The belt has to be slipping or there's a leak. Could also be the valve itself. If you have codes, you should get them checked.

 

Pull your fuel rail and check all the orings on the end of the injectors and check the o-ring that is on the outside of the little "cups" that the injectors sit in. I had one of the o-rings on the outside of those little cups somehow break and was creating a massive vacuum leak.

 

yea u pluged the wrong one you need to plug the line coming from the intake to the bypass solenoid

 

My bad

 

by plugging the one from the intake it will show if the bypass solenoid is bad or not

 

I've got my headlights out painting eyelids atm so unfortunately testing it is a no-go until tomorrow afternoon sometime

 

Plugged it and still nothing. Going to order new gaskets and pull the SC off once I get them.

 

reach undr the bypass valve and try to move it see if it moves free it could be stuck

 

Could it have something to do with where you just went catless...maybe that code it's getting is causing your at to go into limp mode.