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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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#1
Fri, October 28th, 2011, 07:39 AM
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Question on installing custom tunes
When my custom tunes arrive what is the actual process? Do I return to stock before taking my Gryphon out to update, unhook the OBDII, etc...? After updating I assume it is just the same as the initial installation. Can someone please advise?
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