2024-2026 Duramax L5P Motor Ops SOTF Tune Upgrade

Switch on the Fly (SOTF) is now available for the 2024-2026 L5P Duramax. If your truck already runs a Motor Ops single tune or 4 tune pack on the E42 ECM, this upgrade lets you change between 5 tunes from the steering wheel. No laptop and no reflash needed to switch.

Choose Your Upgrade

• Upgrade from Single Tune: for trucks already running a Motor Ops single tune.
• Upgrade from 4 Tune Pack: for trucks already running the Motor Ops 4 tune pack.

Your 5 Tune Slots

• Tune 1, Optimized Stock: refined factory calibration that removes pedal lag. About +15 RWHP over factory.
• Tune 2, Heavy Tow: built for towing up to GVWR with a wide torque curve and EGTs at or below factory. Fine to drive unloaded. About +40 RWHP and +100 ft-lbs over factory.
• Tune 3, Light Tow: for loads up to 8,000 lbs like boats and small trailers, with a sportier drive unhooked. About +90 RWHP and +200 ft-lbs over factory.
• Tune 4, Sport Economy: a sporty daily tune with EGTs at or below factory.
• Tune 5, Race / Max Effort: maxes out the factory turbo. About +160 RWHP and +260 ft-lbs over factory.

Changing Tunes From the Steering Wheel

1. Hold the Cancel (X) button on the left side of the wheel for 3 seconds. Selection starts at tune 1.
2. Push +RES up to step through tunes 1 to 5.
3. Watch the tune number left of the speed readout. It turns green when the new tune is confirmed, then stays grey.

How to Order

1. Pick the upgrade that matches the tune you have now and check out.
2. Email your truck's VIN and whether your dash is set to imperial or metric to tunes@dirtydieselcustoms.com.
3. Your SOTF tune is delivered within 48 hours through the HP Tuners TDN app. Tune files are not sent by email.

Requirements

• 2024-2026 Chevrolet Silverado or GMC Sierra 2500HD/3500HD with the 6.6L L5P Duramax and an unlocked E42 ECM.
• An existing Motor Ops single tune or 4 tune pack for that truck.
• HP Tuners hardware and the TDN app to receive and load the tune.

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