I just got my car up and running after changing my alternator and i have lost all my boost. If im lucky i can get its up to 10kpa when i usually run around 16-17lb i really dont know what could be the probleme i feel like im driving a regular 2.0 car

 

Possibly bumped the hot/coldside pipes?! Honestly, just perform a boost leak test.

 

It would help to know if you have a sc or tc. If its an sc maybe your belt is slipping

 

How do i do a boost leak test?

 

Its a 05 sc modele and i dont see any sign of the belt slipping

 

Did you do the alternator install yourself?

 

Yes i did

 

Any funky sounds on acceleration? Is the belt routed the right way? Tightened enough?

 

I was thinking the same thing. Is the SC pulley spinning?

 

Did you install the belt 100% correctly? Maybe you routed it wrong somewhere

 

The garage put my belt back i was having trouble with it but yea my sc pulley is turning the belt is the same as the diagram and its not sliding my supercharger still goes on i just barely get any boost from it

 

Finally i think my bypass valve is getting old i played with the spring abit and i had boost till it shut back into place so im guessin ill have to either replace it or lube it

 

Um 10Kpa is more like 1.4psi not 16 or 17

 

I know i regularly run 17-16 psi but right now all i run is 10kpa