Custom diesel calibration
Built for the way you drive.
Purpose-built diesel tuning for Cummins, Duramax, and Power Stroke platforms.
CumminsDuramaxPower Stroke
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LC DIESEL PERFORMANCE • CUSTOM CALIBRATION • DIGITAL DELIVERY
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Start with your truck. We’ll keep the path to the right options simple.
Why LC Diesel
Performance should feel clear, dependable, and built around the truck you own.
Custom Calibrations
Files tailored to your truck, modifications, and intended use.
Fast Turnaround
Clear fulfillment expectations and responsive file delivery.
Revision Support
Practical support when your setup needs an adjustment.
Secure Checkout
Protected payments through SellAuth’s established checkout flow.
Featured tuning
Straightforward options for the way you use your truck.
How ordering works
No guesswork. Here's exactly what happens from checkout to a file on your truck.
1. Tell us your setup
Year, engine, transmission, and any supporting modifications. Add it at checkout so we build against your actual truck.
2. We build your calibration
Your file is written for your combination and intended use — not pulled off a shelf.
3. Delivered to your account
Your file and instructions land in your customer dashboard, ready to load.
4. Dial it in
Something not feeling right? Open a ticket and we'll revise the file with you.
Customer feedback
Important Tuning Notice
Read before purchasing.
Products are intended for lawful applications and must be used in accordance with all federal, state, and local requirements. Vehicle condition, supporting modifications, and maintenance can affect results. Review each product description carefully before ordering.