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2004 to 2008 F-150 and Mark-LT 4.2L, 4.6L and 5.4L equipped F-150s and Mark-LTs. |
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OK...
Ordered Gryphon in January and patiently waiting for custom tunes. In the meantime, I'm debating whether to have my PCM reflashed at the dealer for the latest updates. I'm having some tranny shudder/shift issues and my heat is either hot or cold (no variation in the temp control). Will this change hex code? Is this info Bill needs? Of course, I'll return it to stock program before taking it to dealer. Just didn't know how this will affect the application of tuner / custom tunes. Thanks for any info. 'preesh, Rich
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