P0171 - "System Too Lean Bank 1"

[SheepDog]

They sent me 2 files 1 for the jlt intake and 1 for stock intake so yes i do swictch tune back to stock intake...I told them I thought the tune was wrong but they say it's mechanical but if it was mechanical i would get codes with stock intake 2 right

Not if the leak is coming from something on the JLT intake. Or, the Lund tune is wrong for the intake you actually have.

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[Chavez38]

I sent the logs with the jlt on and they said everything was fine...which it does run fine for a lil bit then I turn off start it run for a lil bit and throws codes