Sport Tune Only for EFI Live Spade

Features:

• Peak gains of +100 HP and +180 ft-lbs
• Designed for maximum street performance
• Fastest acceleration of all tune options
• No dead pedal feeling under load
• Firm, responsive transmission shifting
• Emissions equipment remains intact
• Fully customized with 100+ calibration changes
• More power and less soot than box tuners
• SPADE AutoCal v3 required to flash tune
• Best used with supporting fuel upgrades
• Recommended TCM tuning for smooth drivability
• Not suitable for towing without proper gauges

Turn Your Truck Into A Street Dominator

If you’re ready to feel everything your 2014 Duramax has to give, the Sport Tune from DuramaxTuner.com is how you unlock it. This tune is designed to deliver that raw surge of power you’ve been craving, giving your truck up to +100 HP and +180 ft-lbs of torque. It’s fast, aggressive, and built for drivers who want more than just average performance. Whether you're chasing that light-to-light rush or just want your daily drive to feel more alive, this tune brings the throttle to life with zero dead pedal and firm, crisp shifting. The truck feels lighter, more responsive, and simply more fun to drive. It’s the kind of tune that makes you want to take the long way home. Just keep in mind, this isn’t for towing heavy loads or letting your buddy who isn’t used to tuned trucks hop behind the wheel. If you're looking for that top-end punch and a truck that pulls like it means it, this is the tune for you.

Built For Power With Precision In Every Line

The Sport Tune is a 49-state legal calibration that pushes the factory limits while keeping emissions equipment intact. It delivers the highest performance increase available without compromising emissions compliance, making it ideal for enthusiasts who still need to pass a smog test. With over 100 custom calibration changes from stock, this tune offers clean, efficient power delivery without hacking into your factory harness or sensors. It’s compatible with EFI Live’s AutoCal v3, which allows easy programming, diagnostic logging, and updates. To get the most from this tune, TCM tuning is highly recommended, especially for trucks with larger tires, aftermarket turbos, or built transmissions. Supporting mods like a lift pump, cold air intake, and transmission upgrades will help maintain performance and reliability. For competition or weekend fun, this tune shines brightest when paired with the right build and smart driving.

Fitment: 2014 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LML

Notes:

• EFI Live SPADE AutoCal v3 device is required.
• This tune is 49 State Legal, not for use in California.
• Emissions equipment remains fully intact and functional.
• Designed for drivers seeking maximum power output.
• +100 HP and +180 ft-lbs torque increase from stock.
• Not recommended for regular towing without supporting mods.
• Improper use can cause drivetrain or engine damage.
• Supporting mods are strongly recommended: lift pump, intake, CP4 upgrades, transmission tuning.
• Should only be used on private property or sanctioned competition events.
• Works best when part of a Switch on the Fly setup for occasional use.
• Custom tuning includes over 100+ calibration changes from stock.
• DuramaxTuner.com offers full phone support for tuning questions.