Supercharger running lean in high end...

[Limbwalker]

Threw another PO171 code after cleaning the MAF sensor."Bank 1 running lean"
Am I losing an injector? It states I may need to change fuel filter (which I know it needs) potential O2 sensor... Anyone have experience with this??? It is losing power on hills above 3000 rpm

 

[lhsoulrebel]

Check vacuum lines, and throttle body gasket(hard to believe it would be the gasket if you've had it on for a while, but those are the usual suspects).