$200 for used tuner? tell him you'll give him $100 and see what he says...I know predators aren't in the low egt ballpark Ferman talks about but a new one can be had for
$264 with overnight shipping...
but it does have 5 tunes and you can choose an altered stock tune and a couple of tow tunes below
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Stock Tune: with adjustable speed limiters. Speed limiter to approximately 120 MPH varies based on vehicle set-up weight, tire size, 2wd vs. 4wd, etc.
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40 RWHP and 100-ft/lb TQ: Tow Tune, made specifically for towing. DiabloSport recommended weight limitations based on manufacturer suggested limits for the vehicle.
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65 RWHP and 150-ft/lb TQ: Economy Performance Tune, designed for Economy and Performance, fuel economy depends solely on driving style, and will vary from vehicle to vehicle. DiabloSport recommended weight limitations of 8,000 Lbs.
the other two(below)are performance minded and you may not be interested...
85 RWHP and 195-ft/lb TQ: Performance Tune, designed specifically for performance street driving. DiabloSport recommends this tune not be used for towing.
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120 RWHP and 240-ft/lb TQ: XPerformance Tune. DiabloSport recommends this tune not be used for towing.