Performance Auto Repair in Dallas | Cowboys Customs

At Cowboys Customs, we do not do cookie cutter auto repair. Our specialty is performance auto repair and upgrades for lifted trucks, diesel rigs, and custom builds. If your truck has oversized wheels, aftermarket suspension, or heavy duty modifications, you need a shop that understands how to keep it running at peak performance.

Built for Custom Trucks, Not Daily Drivers

Most repair shops focus on everyday vehicles. We focus on performance driven trucks. From lifted suspensions to high output engines, our team is experienced in diagnosing, repairing, and fine tuning trucks that are built to stand out and perform.

Our Performance Auto Repair Services

Suspension and Steering Repair: Expert adjustments, alignment correction, and reinforced components for lifted setups.
Engine Performance Upgrades: Tuning, performance diagnostics, and repair for high horsepower builds.
Drivetrain and Transmission Work: Custom transmission service, gear upgrades, and axle repairs built to handle big tires and off road use.
Brake and Stopping Power Upgrades: Performance brake kits, oversized rotors, and custom solutions for heavy builds.
Exhaust and Intake Systems: Performance exhaust fabrication, turbo setups, and airflow improvements.
Cooling and Fuel Systems: Custom cooling solutions and high flow fuel systems to support power hungry builds.
Electrical and Performance Diagnostics: Specialized testing for tuned and modified trucks.
AFM DOD Delete and Lifter Solutions: Reliability focused upgrades for GM V8 trucks and SUVs.

AFM DOD Delete Service in Dallas Fort Worth

GM Active Fuel Management also called Displacement On Demand is designed to shut off cylinders during light load cruising. It sounds simple, but on real world trucks with big tires, towing duty, or performance tunes, AFM can create problems that hurt reliability and drivability. Cowboys Customs offers professional AFM DOD delete service that removes the weak links and sets up your engine for consistent power and long term reliability.

Who benefits from an AFM DOD delete

Owners of Chevrolet and GMC trucks and SUVs with 5.3, 6.0, or 6.2 engines including many Silverado, Sierra, Tahoe, Suburban, Yukon, Escalade, and related platforms. This includes Gen IV AFM engines and many EcoTec3 Gen V engines. We also service newer models that use Dynamic Fuel Management with dedicated DFM delete packages.

Common signs you may need it

• Ticking or clattering that points to lifter issues
• Random misfire or cylinder specific misfire especially on cylinders commonly managed by AFM
• Rough idle or shudder during the transition to V4 mode
• Noticeable oil consumption or oil pressure fluctuation
• Inconsistent throttle feel or loss of power while towing or climbing

Why our customers choose to delete AFM DOD

Reliability upgrade: Deletes the failure prone lifters and related components that often collapse or stick.
Stronger and more consistent power: No more surprise cylinder drop during a pass or a climb.
Smoother drivability: Clean and predictable throttle response on heavy builds and with big rolling mass.
Better towing experience: Steady power and engine braking without AFM hunting in and out of V4 mode.
Cleaner exhaust note: A steady V8 sound that matches your performance exhaust.
Lower oil consumption for many vehicles: Fresh components, proper clearances, and correct calibration reduce the oil drinking that often shows up on AFM engines.

What the Cowboys Customs service includes

Factory level diagnosis: We scan, pressure test, and inspect so you get the correct fix the first time.
Two clear pathways based on condition and goals:
• Calibration only disable: For healthy engines we can electronically disable AFM and recalibrate the engine and transmission for your tire size, gear ratio, and use case.
• Complete mechanical delete: For trucks with lifter or cam wear we install a non AFM camshaft, standard lifters, trays, valley cover, pushrods, gaskets, and all required hardware. We then complete a matching calibration so the ECM and TCM work in harmony.
Supporting upgrades as needed: Timing set, oil pump, valve springs, trunnion upgrades, and other reliability parts are available if inspection shows they are smart to do while we are inside the engine.
Calibration that matches your build: Tire size, gear ratio, intake and exhaust flow, and intended use are all factored in so the truck feels right in the real world.
Quality parts and clean workmanship: We use proven components and follow torque specs and procedures that protect your investment.
Road testing and post service checks: We validate operation, confirm no codes, and confirm proper fluids and pressures before you pick up.

What to expect after a delete

Power delivery: Stronger and more predictable. Most owners notice improved response especially with larger tires and towing weight.
Fuel economy: Results vary. Some trucks see little change because AFM seldom activates on heavy builds. Others may see a small drop in economy in exchange for better drivability and reliability.
Sound: A steady V8 tone with no V4 drone.
Maintenance: Normal oil changes with quality oil and filters. No special service routine required.

AFM vs DFM on newer trucks

Many 2019 and newer GM models use Dynamic Fuel Management. We offer dedicated DFM delete packages with the correct camshaft, lifters, control solutions, and calibration strategies for those engines. Ask our team which system your vehicle uses and we will guide you to the correct parts and plan.

Compliance and inspections

Our goal is a reliable truck that passes Texas state inspection and is pleasant to drive every day. We discuss your build and local requirements up front, then recommend a path that fits your goals. If you have questions about your specific model or inspection status, we will walk you through what to expect.

Located in Dallas Fort Worth

Cowboys Customs performs AFM DOD delete service right here in Dallas Fort Worth. Bring us your Silverado or Sierra workhorse, your lifted family hauler, or your show build. We will give it the dependable V8 performance it deserves.

Call us for an inspection and quote. We will evaluate your engine, explain options in plain language, and recommend the smartest route for your budget and goals.

Why Cowboys Customs for Performance Auto Repair

Your lifted or performance truck is not like everyone else’s ride and it should not be treated like it. At Cowboys Customs, we work with custom and modified vehicles every day. From fine tuning off road beasts to repairing show quality builds, we know how to keep your truck reliable and powerful.

Serving Dallas Truck Owners with Expert Repair

Located in Dallas, Texas, Cowboys Customs is trusted by truck enthusiasts across Texas who expect more than standard auto repair. When your build needs precision service, you can count on us.

Get Back on the Road Stronger Than Before

Whether you need suspension repair, drivetrain upgrades, AFM DOD delete, or a complete performance overhaul, Cowboys Customs has you covered.

Call today or visit our Dallas shop for professional performance auto repair tailored to your custom truck.