Chip for a 4.2?
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Joined: Dec 2004
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Chip for a 4.2?
What is the best performance chip to put on a 2003 F150 with an auto trans. and a 4.2L engine. Is there one that can do a performance or milage upgrade depending on the settings? How much difference would it make in each case?
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Joined: Aug 2001
Posts: 4,532
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From: Trussville, Alabama
Not to try and run you away from the 4.2 forum, but I suspect you could get some good info here at FTE,
right here ----> https://www.ford-trucks.com/forums/f...splay.php?f=46
right here ----> https://www.ford-trucks.com/forums/f...splay.php?f=46
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