I have a 2005 SS/sc and last night it threw a po171 code it the first time it every had a code on but once I started researching it I noticed few people with this problem but anyway I noticed with wot I only create about 5 psi of boost can anyone tell me what direction to go or where to start my Balt is completely stock and should be around 12psi just trying to get it back to normal boost for stock

 

Any modifications or tune? PO171 is system too lean which I assume can cause your ECU to pull boost via the boost bypass solenoid to protect the engine.

 

No completely stock I just bought the car about a month ago and it was fine until the other day and I noticed it wasn't building more than 5 psi like I said I'm new to the SS/sc and I just want to be able to get max performance out of it until I go to stage 2 with injectors and smaller pulley

 

Does it break up at all in higher rpms at wide open throttle?

 

No it doesn't break up just only goes to 5 psi not sure where to go from here not sure if I have a bad heat exchanger or bpv or just a vacuum leak I look around for any noticeable leaks but have seen anything I would by pass the solenoid but like I said new to the SS and don't want to mess it up Itaken my baby I'd rather ask questions then tear something up