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ECM Tuning & Custom Wiring Harnesses for Derby, Racing & Off-Road

Backwoods Racing LLC builds simplified wiring harnesses and performance-focused ECM tunes for demolition derby, race cars, and off-road machines.

We specialize in custom simplified wiring harnesses and ECM tuning for demolition derby, circle track, and off-road applications. Every harness and tune is built to handle hard hits, harsh environments, and long run times.

Whether you're building a derby car, prepping a race vehicle, or converting an off-road machine, we deliver clean, reliable, plug-and-play solutions that get rid of unnecessary factory wiring and make your setup easier to service.

Located in Riley, MI, we serve customers across the U.S. and CANADA with fast turnaround times and proven results.

WHY CHOOSE US?

✔ Purpose-Built for Abuse

Our harnesses are designed for rough environments!

✔ Clean, Minimalist Wiring

Remove factory clutter and run only what your engine needs.

✔ Custom ECM Tuning

Better throttle response, no security issues, and optimized performance.

✔ Derby, Racing, & Off-Road Specialists

We understand the unique demands of demolition derby, racing, and off-road vehicles because we're not just sellers; we're builders. Our hands-on experience ensures our solutions are practical, reliable, and perfectly suited for the challenges these vehicles face.

Simplified Wiring Harnesses

Custom-built harnesses are available for LS, GM 4-cylinder and V6 platforms, as well as Dodge V6 and V8 platforms and Ford V8 4.6 platforms. These are perfect for derby, circle track, mud trucks, and off-road applications.

ECM Tuning

We specialize in tuning for enhanced performance, increased reliability, and streamlined simplicity. Security system removal is offered where compatible.

ECM Tuning for Derby, Race & Off-Road Vehicles

Our tuning is built for abuse, and reliability, not fragile performance tricks. Whether you're running a derby car, dirt track racer, or a dedicated off-road machine, we tailor your tune to your exact build.

Common Tune Features

  • VATS,SKIM,PATS security removal

  • Improved throttle response

  • Idle & fueling cleanup

  • Cooling fan control adjustments

  • Rear O2 / EVAP / unnecessary emissions removed (off-road/competition use only)

  • Rev limiter adjustments

  • Transmission tuning (if applicable)

  • Speed limiter removal

  • Simplified sensor logic for derby/off-road applications

  • Gear ratio/tire adjustments

  • Vin changing

  • AMF (DOD removal)

Supported Platforms

  • GM LS & Vortec engines

  • GM 4 cylinder and V6 engines

  • Many Chrysler/Dodge/Jeep ECMs

  • Ford Modular 4.6/5.4 engines

  • Contact us for special requests

Why Our Tunes Work Best

We tune specifically for derby and racing conditions — extreme heat, long idle times, sudden throttle changes, and unpredictable load. Our tunes are stable, simple, and built for real-world abuse.

Simplified Wiring Harnesses for Derby, Racing & Off-Road

Factory harnesses are messy, fragile, and packed with unnecessary systems. Our custom harnesses strip everything down to the essentials so your vehicle is easier to service and far more reliable.

Harness Types Available

  • LS swap simplified harness

  • Race car harness (circle track / drag)

  • Off-road & mud truck harnesses

  • GM 4 cylinder and V6 platforms

  • FORD V8 4.6 5.4 platforms

  • DODGE V6 and V8 platforms

What’s Included

  • Proper heat-shrink & loom

  • Clean, minimal design

  • Built for quick installs

Benefits

  • Saves hours of wiring

  • Prevents electrical issues during hard hits

  • Easy to troubleshoot

  • Removes all unnecessary systems