2024-2026 Duramax L5P Motor Ops HP Tuners MPVI Custom Tuning
Take power and performance to the next level on your 2024 or 2025 Chevy Silverado or GMC Sierra with our purpose built single tunes.
This product is for vehicle owners and shops that already have the required hardware for tuning the L5P Duramax. Please be sure you have access to the following or purchase it below:
- HP Tuners RTD4
- 8 - HP Tuners Universal Credits
- Unlocked OEM E42 ECM from your vehicle (or purchase unlock from us and ship it to HP Tuners)
Race / Max Effort Tune
- Maxes out the factory Turbo
- + 150 RWHP, + 260 ft-lbs torque over factory
Sport Plus Tune
- Designed for Unloaded Daily Driving
- +100 RWHP, + 200 ft-lbs of torque over factory
Sport Economy Tune
- Sporty and SAFE tune to run
- EGTs will remain at or below factory EGT levels
- +80 RWHP, + 190 ft-lbs of torque over factroy
Heavy Tow
- Designed for towing any size load up to gross vehicle weight rating
- Nice wide torque curve to ensure that you improve your towing experience
- Completely fine to drive unloaded as well
- Delivers EGTs that are at or below factory calibration
- +40 RWHP, +100 ft-lbs of torque over factory
Optimized Stock
- Refined factory calibration
- Removes pedal lag
- Improves the factory power to ensure vehicle operates smoothly
- +15 RWHP over factory calibration
Order Processing Time:
Orders are typically processed within 24-48 hours after the order has been placed.
Custom or special order items may take longer to process, typically 3-5 business days depending on the product and customization required.
Shipping Methods:
Standard Shipping (3-7 business days - location dependent)
Express Shipping (1-2 business days- location dependent)
Packaging:
All parts are securely packaged to better prevent any damage during transit. Fragile or high-value parts will be packaged with additional protective materials, such as bubble wrap or foam padding.
Shipping Rates:
Shipping rates vary based on the size, weight, and destination of the package. You can view the estimated shipping costs for your order during the checkout process before placing your order.
Order Tracking:
Once your order has been shipped, you will receive an email with the tracking number and carrier information. You can also track your order status by logging into your OCDiesel account.
USA Shipping:
We ship to the USA! (Except California) Please note that USA shipping rates and delivery times may vary based on destination. Customers are responsible for any customs fees, import taxes, or additional charges that may apply.
Not all products are stocked in-house. To ensure you receive your desired items promptly, please check for availability before placing your order. Some products may be backordered due to high demand or supply chain constraints, which could result in longer delivery times.
We strive to keep our inventory updated regularly, but availability can change quickly. For the most accurate information, contact the OCDiesel customer service team using either this link, or the chat bubble on the bottom right of this page.
Most items are eligible for return within 30 days of shipping, provided they are unused, in original manufacturer packaging, and in resalable condition. All returns & cancellations are subject to restocking and cancellation fees.
Returns must include a Return Authorization Number (RA #) and be shipped with tracking. Return shipping costs are the responsibility of the customer.
Custom/special orders, electronics, and digital goods are final sale—no returns, refunds, or exchanges.
For full return instructions, fee details, and conditions, click here.
