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DTC Problem

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Old 05-10-2013, 09:45 PM   #1
waulen2980
 
Join Date: Apr 2013
Vehicle: 2007 Ford Mustang
Location: California
Posts: 17
Default 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
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Old 05-10-2013, 09:47 PM   #2
waulen2980
 
Join Date: Apr 2013
Vehicle: 2007 Ford Mustang
Location: California
Posts: 17
Default

BANK 2, sorry typo
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