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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
Mon, May 31st, 2010, 11:00 AM
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Headers need retune?
Have 2008 F-150 FX4 with 5.4.Had you guys upgrade my edge to gryphon with pegasis program.Want to add headers to truck.Do I need to have programer retuned?
eagle1highlander 
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#2
Tue, June 1st, 2010, 08:18 AM
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Here's a recent thread on this subject;
Does adding headers mean more custom tunes? - F150online Forums
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#3
Tue, June 1st, 2010, 06:21 PM
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Thx !
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