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For GT45 Universal Billet Turbo compatible for Charger T4 V-Band 1.05 A/R Oil Feed Return Line Kit
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Billet Twin Turbo Cartridge compatible for INFINITI Q60 Q50 3.0 16-22 144115CA2D 144115CA0C
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Billet Turbo Turbocharger compatible for Honda Civic CRV 1.5L 2016-2019 2020 49373-07011
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Billet Left Turbo Turbocharger compatible for BMW 335i 335xi 135i N54 B30 3.0L 2008-2013
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Turbo Turbocharger for GT1749V compatible for Volkswagen VW Golf MK4 Bora 1.9 TDI Diesel 98-04
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Tuning: What It Can and Cannot Do
Written by the PickupChain team · Last reviewed October 17, 2026
A handheld programmer or tuner changes engine and transmission settings: fuel, timing, shift points and, on turbo engines, boost. On turbocharged trucks the gains can be significant. Tuners also recalibrate the speedometer after a tire size change and can adjust idle and shift firmness.
Throttle controllers only change how quickly the pedal responds. The truck feels faster, but engine output does not change. They are a simple, reversible plug-in option.
Tuning can affect your powertrain warranty and emissions compliance. Look for tunes and parts that are legal in your state, especially in California and other CARB states, and save your stock file so you can return to factory settings.
Frequently Asked Questions
+Will a tuner void my warranty?
A dealer can deny a powertrain claim if the tune caused the failure. Many owners return to the stock tune before service. Some manufacturers offer their own warranty-friendly performance calibrations.
+Can a tuner fix my speedometer after bigger tires?
Yes. Most programmers let you enter the new tire diameter, which corrects the speedometer, odometer and shift points.
+Throttle controller or tuner?
A throttle controller only sharpens pedal response. A tuner changes actual engine settings and can add power and improve shifting. For real gains, a tuner is the choice.