EXPRESS DIESEL
PERFORMANCE
Texas's Premier Diesel Truck Specialists. Cummins, Duramax, Power Stroke, Titan.
Core Services
Diagnostics & Tuning
Advanced diagnostics and custom ECM calibrations for Cummins, Duramax, Power Stroke & Titan platforms.
LEARN MORE →Engine & Transmission
Expert engine and transmission repair — from injectors and turbos to full performance builds.
LEARN MORE →Maintenance & Repair
Preventive maintenance, diagnostics, and diesel repair to keep your truck running at peak performance.
LEARN MORE →Performance Upgrades
Exhaust systems, turbo upgrades, fuel systems, and calibration servicing. South Texas quality, no shortcuts.
LEARN MORE →More Power, Better Manners
Custom ECM calibrations for Cummins, Duramax, Power Stroke, and Titan platforms — built around the real condition of your engine, fuel system, and transmission. Already have an EZ LYNK or HP Tuners? We write the calibration and send it straight to your device.
- Custom calibration written for your truck, your fuel, and your goals — never an off-the-shelf file.
- Baseline diagnostic scan and datalog before anything is flashed.
- Follow-up datalog refinement at no extra charge after a few hundred miles.
Get It Fixed Today, Pay Over Time
Express Diesel Performance has partnered with Snap Finance so your truck doesn't have to wait on a budget. Lease-to-own financing covers repairs, tuning, and parts — approved in minutes, no perfect credit required.
- Perfect credit not required
- Approvals from $300 to $5,000
- Apply in minutes — in the shop or online
- Pay over time, own it at the end
SNAP FINANCE
Lease-to-own financing
Snap Finance is a lease-to-own program. Approval, amounts, and payment terms are determined by Snap Finance, not Express Diesel Performance.
LATEST FROM THE SHOP
Real trucks, real work — pulled live from our social channels. Tap any post to see the full story.
“Super smooth tunes. Layne was very helpfully and didn’t hesitate to teach about the ez link tuner ”
Wyatt mangold
2015 power stroke
“Got lifetime tunes, good clean tunes shifts good!”
Landen Shepard
2019 f250
“Had done a tuning for my 2022 F350 and honestly Im impressed and Very happy with my results, definitely recommend getting Some work done here.”
Angel De Hoyos
“Layne hooked it up! He traveled to me, got me hooked up with a weight reduction kit on my 22 f250 and never had to leave the house. Tune is great and truck sounds amazing! Will be using him again”
Cameron Shmidl
“Layne retuned my truck and from the drive home I am very satisfied. Went from getting 12-13 mpg on the highway to 17-18 mpg. Very satisfied definitely recommend him.”
Jacob Nesloney
“EDP is the place to go. Layne got me hooked up and problem free, more horsepower, I can hear the motor actually breathe and The Ol’ Dark Knight sounds mean. He’s a stand up guy and so is his father. Good people and awesome work. Will be returning soon with more performance work and will be spreading by word of mouth, and sporting and advertising that new decal on my truck. Thanks Layne and Jeremy for Makin Trucks Great Again. 💪🏼💪🏼💪🏼”
Mario
About Our Shop
EST. 2024
South Texas quality diesel performance upgrades, tuning, and exhaust. Express Diesel Performance is Rockport's trusted 5-star diesel specialist — offering advanced diagnostics, engine & transmission repair, and custom calibration servicing for Cummins, Duramax, Power Stroke, and Titan platforms.
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