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waulen2980 05-10-2013 09:45 PM

DTC Problem
Rolled back my dyno to stock and now am getting a DTC Code of P0174 System too lean on bank 4. Need to keep my stock tune for emissions testing, so what do you think might be the remedy? Clean MAH air sensor?

2007 Mustang GT
JBA Shorties
Cold Air intake

waulen2980 05-10-2013 09:47 PM

BANK 2, sorry typo

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