PERFORMANCE TUNING
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PERFORMANCE TUNING

Maximum Power, Engineered Precision

We don't just add horsepower — we engineer complete power solutions. Every tune is custom-calibrated to deliver reliable, measurable gains.

OVERVIEW

Horsepower is easy to advertise and hard to do right. Every calibration we write starts with a full diagnostic scan and datalog of your truck, so the file is built around the real condition of your engine, fuel system, and transmission — not a generic tune pulled off a shelf.

We support Cummins, Duramax, Power Stroke, and Titan platforms, from a stock daily driver that needs better fuel economy and towing manners to a fully built competition truck. Tuning is performed in-house at our Rockport shop, and every file is verified with a road log before the truck goes home.

WHAT'S INCLUDED
ECU CalibrationCustom maps for every platform
Turbo UpgradesSingle & compound turbo systems
Fuel SystemInjectors, CP3/CP4 upgrades
Exhaust SystemsFull 4" & 5" turbo-back systems
Intake & IntercoolerHigh-flow intake & FMIC upgrades
HOW IT WORKS

Our Process

01

Diagnostic Scan

Baseline datalog, fault codes, and injector health check before anything is written.

02

Platform Review

We confirm your hardware, fuel, and goals so the tune matches what the truck can actually support.

03

Custom Calibration

A file written for your truck, loaded and verified under load on the road.

04

Follow-Up Logs

You send datalogs after a few hundred miles and we refine the tune at no extra charge.

REQUEST A TUNE

Tell Us About Your Truck

Local to Rockport? Send your details below. Anywhere else? We can tune your truck remotely.

GET A REMOTE TUNE

REQUEST A TUNE

Tell us about your truck.

Provide a phone number or email — we'll contact you to finalize your tune.

VISIT US

1121 West Market Street
Rockport, Texas 78382

Mon–Fri: 9AM–5PM

PLATFORMS

CUMMINSDURAMAXPOWER STROKETITAN
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⚠ DISCLAIMER: All performance tuning products and services are intended for off-road use only. Use on public roads may be illegal under federal and/or state emissions regulations. By purchasing, you accept full responsibility for compliance with applicable laws. All deposits and tuning part purchases are non-refundable. Express Diesel Performance LLC is not responsible for any mechanical failures resulting from tuning modifications.

Express Diesel Performance

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