Product Description
EDGE PRODUCTS 26401 EVOHT2 WITH ECM/TCM UNLOCK – 2020–2023 GM 6.6L L5P DURAMAX
The EDGE PRODUCTS 26401 EVOHT2 is a high-performance handheld tuner engineered specifically for the 2020–2023 GM 6.6L L5P Duramax. Because L5P trucks require ECM and TCM authorization before any tuning changes can be applied, Edge bundles the EVOHT2 with an ECM/TCM Unlock Authorization, giving L5P owners the ability to safely load performance calibrations, towing tunes, throttle-response enhancements, and more.
The EVOHT2 offers preloaded tuning designed to improve throttle response, drivability, power delivery, and towing performance. Once your ECM/TCM unlock is processed, the device enables efficient calibration flashing through your OBDII port. This gives L5P Duramax owners a powerful, affordable upgrade path without requiring a full monitor-style device.
In addition to tuning, the EVOHT2 provides diagnostic code reading/clearing, adjustable TPMS features (where applicable), speedometer correction for tire size/gear changes, and built-in parameter adjustments to fine-tune drivability.
FITMENT – 2020–2023 GM L5P DURAMAX
- 2020 Chevrolet Silverado 2500HD / 3500HD 6.6L L5P Duramax
- 2020 GMC Sierra 2500HD / 3500HD 6.6L L5P Duramax
- 2021 Chevrolet Silverado 2500HD / 3500HD 6.6L L5P Duramax
- 2021 GMC Sierra 2500HD / 3500HD 6.6L L5P Duramax
- 2022 Chevrolet Silverado 2500HD / 3500HD 6.6L L5P Duramax
- 2022 GMC Sierra 2500HD / 3500HD 6.6L L5P Duramax
- 2023 Chevrolet Silverado 2500HD / 3500HD 6.6L L5P Duramax
- 2023 GMC Sierra 2500HD / 3500HD 6.6L L5P Duramax
An ECM/TCM unlock authorization is required for all L5P Duramax platforms before tuning can be installed. Unlock process instructions are included with the EVOHT2 26401 package.
EDGE PRODUCTS CROSS-REFERENCE ITEMS
Pair your EVOHT2 with additional Edge accessories for enhanced monitoring and data capability:
- EDGE PRODUCTS 98605 EAS UNIVERSAL 5V SENSOR INPUT – Add 0–5V aftermarket pressure or position sensors.
- EDGE PRODUCTS 98608 EAS TEMPERATURE SENSOR – Perfect for EGT, transmission temp, coolant temp, or auxiliary temperature inputs when used with compatible displays.
- EDGE PRODUCTS 85401-201 EVOLUTION CTS3 DURAMAX – For customers with earlier GM Duramax trucks needing full tuning/monitoring in one device.
FAQ
Does the EVOHT2 26401 come with the ECM/TCM unlock included?
Yes. This package includes the required unlock authorization needed for all L5P Duramax tuning.
Do I need to remove the ECM from the truck?
No. The unlock process is handled electronically through Edge’s authorized service path and instructions included in the kit.
What tuning gains can I expect?
Power gains depend on calibration, fuel quality, and truck configuration. EVOHT2 typically improves throttle response, towing power, and overall drivability.
Can the EVOHT2 read and clear diagnostic trouble codes?
Yes. The device includes full DTC reading/clearing functionality.
Does this tuning work on emissions-equipped trucks?
Yes. The EVOHT2 is designed for emissions-on trucks when used with compliant calibrations.
Specifications for EDGE PRODUCTS 26401
| Specification | Details |
|---|---|
| UPC | 810115017707 |
| GTIN | 00810115017707 |
| Shipping Info | Ships from CPP Diesel via standard ground. Most EDGE PRODUCTS ship within 1 business day. Signature may be required for unlock-enabled devices. |
| Prop 65 | This product may contain materials known to the State of California to cause cancer or reproductive harm. Learn More |
