P0451
p0496
p0304
p0300

1)When I'm parked car at idles and stays at 1400rpm

2)filled gas tank and car didn't want to start.

3)the boost was hitting 22psi. (Think it's a gm stage) now only hits maybe 7psi.


Out of these codes would any of then affect boost or is my turbo dieing
Anyone have these problems and what did you do to fix thanks a lot. Boost On.

 

2) filled gas tank and car didn't want to start

is a evap problem

 

That is what the code says, any ideas what?

 

I'd start with a new evap.
Also replace your plugs (stock AC Delco) and change you coil pack on #4 with the coil pack on #3 and see if the recorded misfire moves to P0303

 

Airbag light came on

 

dont tell me u just bought the car from a dealer close to buffalo ny if yes that was my balt lol i tradet it in