Tunes
I'm running the canned 2 tow with adjustments for tire size and gear when my speedo was off. I would not adjust timing unless you runn 91 octane or better. 
Jim
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2002 5.4 SCREW XLT/FX4 Gryphon canned
MAC CAI Spin-Tech Cat back X-Pipe Dual In/Out Side Exit
Drawtite front hitch
Randy Ellis Light Bar w8" KC Driving Lights
265/75/16 Yokahama Geolander A/T-S
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