Hello friends my evo 9 is giving me this code P0171 when I'm crusing and has new fuel pump AEM 320lph and injectors FIC 850cc please if you can help me.

 

Have you get the car tuned since installing the injectors and the fuel pump?

 

That code is ...running lean on bank 1---
so you got tuned and its too lean...

Cant see how you could add injectors and a pump--which both richen the injection system at all points and come up lean if your not tuned--

enlighten us..

 

Leak