All in one 2017-2023 L5P Duramax Off-road Performance Kit  

Bored of your stock L5P ? Look no further this kit will unleash the beast hiding inside your rig . 

No problem! Here's a detailed explanation that's easy to understand:

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*What's Included?*

1. Five Switch-On-The-Fly Engine Tunes:
- Position 0: No extra horsepower, just like your truck’s regular power.
- Position 1: Adds 30 horsepower – great for towing heavy loads.
- Position 2: Adds 80 horsepower – perfect for light towing or saving fuel.
- Position 3: Adds 135 horsepower – good for everyday driving and saving fuel.
- Position 4: Adds 160 horsepower – gives your truck extra power for the streets.
- Position 5: Adds 200 horsepower – max power without changing other parts of your truck.

2. Transmission Tuning for 6 & 10-Speed:
- Makes your truck’s transmission shift gears better to handle more power without problems.

3. E41 Unlock Cable:
- An important cable you need to unlock your truck's computer for tuning.

4. Unlocked TCM (Transmission Control Module):
- Helps to tune your truck’s transmission for better performance.

5. MVPI3 with 12 Credits:
- A device that allows you to make changes to your truck's computer settings, including 12 credits to use.

6. Can Bus Plugs:
- Special plugs needed to connect to your truck’s computer system.

7. Performance EGR Solution:
- Improves the performance of your truck’s exhaust gas recirculation system.

8. **Hi-Flow Downpipe:
- A pipe that allows exhaust gases to flow more freely, improving performance & sound. 

9. Full Stainless Steel 5in Downpipe Back Straight Pipe Exhaust:
- A bigger and better exhaust system made of durable stainless steel, enhancing your truck’s performance.

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*Transmission Tuning & TCM Unlock (T87A)*

- The T87A Transmission Control Module (TCM) from GM isn't perfect. It often makes the transmission shift too early into 5th and 6th gears, especially when you're towing something heavy. This causes the truck to struggle with pulling and downshifting quickly enough.

- TCM tuning should be done by the same tuner as your engine's computer (ECM) to make sure they work well together. This is similar to how GM designs vehicles. Using the same tuner for both guarantees smooth operation.

- Pressure Control: We only adjust transmission pressure where it's needed. Increasing pressure unnecessarily can wear out the pump, increase transmission temperature, and reduce fuel efficiency.

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*What the User Will Notice After TCM Tuning**
1. Increased transmission line pressure to hold more horsepower and torque.
2. Updated shift schedule for better driving experience, reducing the struggle during gear changes.
3. Improved shift timing.
4. Redesigned torque converter lock-up strategy during towing.
5. More efficient power transfer from engine to wheels.
6. Ability to handle more torque earlier in the power curve.

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*Requirements for Installation*
1. Modified and unlocked T87A TCM.
2. HP Tuners MPVI/RTD Device.
3. Four HP Universal Credits.
4. This calibration package can only be installed using HP Tuners MVPI2, MVPI2+, or our private labeled RTD devices. You must have either an unlocked/upgraded ECM from HP Tuners or directly from us. You also need to purchase licensing credits and have the necessary devices.

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*Important Notes*:
- Core TCMs should be returned within 30 days of the shipment date.

** MOTORSPORTS USE ONLY **

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