89 towing tune
Right now I use the canned tune on my gryphon for towing a 7000lbs TT. Truck is a 4.6L 4x4 with a 3.73 gear, pulls that load good but I am wondering what kind of difference a custom tune would make.
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2005 F350 6.0L 6 speed FX4
K&N CAI, Evolution CS
2000 Ford Explorer
1984 Bronco
351 windsor
To many to list 
1968 Galaxie
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