P0171 code - Power Hungry Performance Forum

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P0171 code

Gryphon Programmer (Disabled)
Edge Product has discontinued the Edge Evolution 2, but we still provide support and tuning for it.

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Wed, January 19th, 2011, 03:02 PM

morfn321

Whopper Junior

Join Date: Nov 2010

Posts: 3

P0171 code

Truck just threw a P0171 code the other day. I have a 04 f150 with a custom 89 tow tune that I run all the time. I just got the tune 1 month ago, do you think its the tune thats causing the code? Should I return the truck back to stock. Truck has never had any problems and I didnt notice any performance issues.

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