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

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Old Wed, January 19th, 2011, 02:02 PM
morfn321 morfn321 is offline
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Default 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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