new member
This is the first forum I have ever posted on. After alot of research I decided to buy a PHP Gryphon and here I am. Would appreciate any input on how to get more towing power from my 2004 f150 5.4. Have a K&N filter and flowmaster muffler. 
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edhojr
2004 F-150 Lariat 5.4L 2wd, K&N filter, Flowmaster muffler
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