check around for any vaccum lines that could have gotten knocked off while they did the oil change. make sure all connectors are connected.

 

Haven't seen anything unplugged. Everything should be connected.

 

it does look like they reconnected the boost module plug sorry not technical but thats wht it looks like in the pictures

 

Which one is the boost module plug? Is it inside the red circle?

 

Ok well, I don't know where the boost module switch is but here's another thought. The oil filter is kinda buried in there and it's hard to get to. Is it possible that something was unplugged to make room to get to it? Then of course, reconected, screwing up the boost?

 

does that mean if it's unplugged, the bypass valve stays closed?

 

if anything check your supercharger maybe its the cause of the problem not gaining its boost the pulley form the supercharger is probably causing the drag and mobil 1 not as good as you think royal purple notice a difference check the supercharge oil maybe its dry thats causing the low performance

 

I'll consider Royal Purple for the next oil change. Thanks.

 

The supercharger oil doesn't go anywhere

Yeah...mobil 1 and royal purple (walmart has it now). I'm on pennzoil synth and it's pretty good as well...don't use Q, never use Q