Banks Power Derringer Tuner with iDash 1.8 SuperGauge (66681)
Fits 2014-2018 3.0L EcoDiesel V6 (DS, first-gen)
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Price tracked 10 times since Jul 26, 2026: low $769, high $769, currently $769.
Requires: 2014-2018 EcoDiesel only. Banks sells a different part number, 66798, for the 2019-2023 trucks.
where to buy · 3 retailers tracked
A tuner changes how the engine computer manages fuel and boost so the engine makes more power without any new hardware. The Derringer plugs into the truck rather than rewriting the factory computer, and this version comes bundled with the iDash 1.8 SuperGauge, a small display that shows live readings like boost and exhaust temperature.
why this one — The bundled gauge is the reason to pick this over a bare tuner. On a diesel you want to actually watch exhaust gas temperature and boost while you use the added power, and the iDash gives you that instead of asking you to trust a power level blindly. Two things to know: Banks states the product is 50-state compliant but publishes no CARB Executive Order number on this page, so we make no street-legal claim for it, and the gain figure is Banks' own, with one reseller quoting a noticeably lower number for the same part.
CLAIMED (manufacturer) - bankspower.com product page states "up to +40hp, +63lb-ft" at the top power level. CONFLICT NOTED: reseller Diesel Power Products describes the same part number 66681 as "31 horsepower and 54 lb-ft".
Gain shown is a manufacturer claim, not a guarantee. Price is a list price and can lag the retailer; confirm at checkout. See our affiliate disclosure.