I have been having no boost for about two weeks now. The gauge cycles through the vacuum section like normal and then all of a sudden under acceleration it gets to zero or -1 and it stops on a dime.

After some research I swapped the bypass solenoid and the problem remained. Someone suggested the EVAP solenoid based upon the CEL codes I was popping up. So that was swapped and no better.

I ran the boost bypass mod for a ride around the neighborhood and the boost was back but only to about 6-7 psi, so I'm assuming its not the actual bypass actuator.

The codes that keep popping up since replacing the two solenoids are:

P0033 Supercharger Bypass Valve Solenoid Control Circuit -PCM (saying its confirmed open)
P0171 Fuel Trim System Lean -PCM (in bank 1)
P0101 Mass Air Flow (MAF) Sensor Performance - PCM (saying its pending).

Anyone with a guess or some other troubleshooting ideas would be great.

Thanks.

 

bump?

anything is helpful

 

So I figured out the MAF issues. Had a hole worn into the CAI. Still need help with the P0033 code if anyone has any guesses.