my evo is running lean i dont know why because it is stock, it doesnt have a tune neither a reflash. It always has the engine service soon and with the autozone scanner the scanner said : Sensor circuit low volts (Bank 1 sensor 2) the wideband marks 13.2 if theres anyone who can help me I would apreciate it .

 

Sounds like a front O2 sensor problem. Do you know the specific code as there are separate ones for the front/rear sensor? Still under warranty?

 

Does the wideband stay at 13.2 at normal cruise? Or does it hit 13.2 at WOT?

 

the code is : P0137 Oxygen O2 Sensor Circuit Low Voltage (Bank 1, Sensor 2)

 

at WOT.... thats the problem :S

 

This probably isn't it, but when someone says they are running lean the first question i ask is the fuel relays. Have you replaced them with the green or blue ones?

 

Yep exactly I would check the fuel relay , there are instructions somewhere to replace it with the headlight one to test it.
I would definately check that.