Diesel ECM Tuning & Engine Programming Services in Texas
Today’s heavy-duty trucks rely on complex computers to manage everything from power output to emissions. If your truck isn’t performing as it should, engine system reprogramming & tuning may be the solution.
At Apex Diesel Repair, we offer in-shop ECM tuning that’s customized to your truck’s specific make, model, and application. Whether you're looking for more pulling power or want to improve fuel efficiency, our tuning process is built for real-world performance and long-term reliability.
Our certified technicians use advanced ECM tuning tools and OEM-specific software like Cummins Insite, Detroit DDDL, and CAT ET to unlock your truck’s full potential. Every tuning session includes a full system diagnostic, safe calibration, and performance testing.
We offer:
- Performance ECM tuning for increased torque and horsepower
- Fuel economy tuning to reduce operating costs
- Speed limiter adjustments for safety or compliance
- Aftertreatment system calibration
- Idle time reduction programming
- Emissions control tuning (legal and compliant only)
When your rig starts behaving sluggishly during acceleration, showing poor mileage, or exhibiting excessive idle time, our tuning services can help optimize performance without compromising reliability.
What Makes Us Different
Unlike generic mobile tuners or risky DIY kits, we perform all engine system reprogramming & tuning in-shop—where your truck gets the safest and most precise environment for tuning.
Here’s why that matters:
- Certified ECM technicians with advanced training
- OEM-compliant software and tools for every major engine
- Safe, stable power sources and a secure internet for downloads
- Pre- and post-tuning diagnostic scans
- Real performance gains, verified by data
Tuning inside our shop means we can run full diagnostics, monitor your ECM during calibration, and avoid risks caused by unstable voltage or poor connectivity. You also get transparent documentation on what was adjusted, how it affects performance, and what to expect moving forward.
Our approach isn’t a one-size-fits-all. It’s data-driven, technician-led tuning that’s as smart and tough as the trucks we service.
Contact Us About Engine System Reprogramming & Tuning Now: Call 830-730-7555!
If you’re ready to boost performance, reduce fuel burn, or calibrate your truck for compliance, schedule your engine system reprogramming & tuning at Apex Diesel Repair. Call 830-730-7555 today—this service is available in-shop only.
FAQs
What Areas Do You Serve For Engine System Reprogramming & Tuning?
We provide in-shop tuning at our New Braunfels, Texas facility and proudly serve operators from Houston, TX; San Antonio, TX; Dallas, TX; and Austin, TX who bring their trucks in for performance calibration.
Is Engine Tuning Safe For My Truck?
Yes. When done in a controlled environment with OEM-level tools, tuning is safe and effective. We make sure your ECM settings stay within safe operating thresholds for both power and durability.
What’s the Difference Between Performance and Economy Tuning?
Performance ECM tuning boosts horsepower and torque—great for heavy haulers. Fuel economy tuning adjusts parameters to improve efficiency at lower RPMs, helping fleets and OTR drivers reduce fuel costs.
How Can I Get Engine System Reprogramming & Tuning?
To book your engine system reprogramming & tuning, call 830-730-7555 today to schedule your in-shop appointment. We’ll walk you through every step.
