Redefining Engine Testing for Maximum Performance

Engine testing solutions built for tractor pulling, Pro Mod drag racing, and high-performance diesel engines

In competitive motorsports, performance wins, and consistency keeps you on top. Whether it’s tractor pulling, Pro Mod drag racing, or high-output diesel engine performance, success isn’t just proven at the track, it’s engineered in the test cell.

That’s where the SF-Black Widow EX2 is redefining what modern engine testing can deliver.

Built for Extreme Motorsports Applications

High-performance engines demand more than raw horsepower, they need precision, durability, and responsiveness. Across pulling and racing disciplines, teams require:

• Massive torque at low RPM
• Immediate response to aggressive throttle and load changes
• Sustained performance under high-stress, continuous load

The Black Widow EX2 meets these challenges head-on. With over 6,000 horsepower and 5,000 lb-ft of torque capacity, it provides the headroom needed for multi-turbo diesel pulling engines, high-horsepower Pro Mod engines, and other extreme builds.

Its ability to absorb torque at low speeds while maintaining high-speed capability makes it ideal for replicating real-world racing and pulling conditions in a controlled environment.

Simulating Real-World Race and Pull Conditions

Championships are often decided in fractions of a second. Whether it’s the sled weight transferring in tractor pulling or a Pro Mod car hitting full boost off the line, the EX2 replicates these critical moments with precision.

Its advanced quad water valve control system responds instantly to:

• Turbocharger spool-up and boost ramp
• Nitrous engagement and fuel system changes
• Rapid increases in engine load and volumetric efficiency

This responsiveness ensures engine builders can simulate the “hit” under full load, giving confidence that what performs in the test cell will perform on the track.

Flexible Testing for Any Engine Setup

No two engines, or racing programs, are the same. From Pro Stock diesel tractors to multi-engine modified setups and Pro Mod cars, testing needs vary.

The EX2’s versatile configurations allow teams to:

• Test smaller engines with high precision
• Scale up to extreme, high-output builds
• Support multiple engine platforms on one dyno

Dual-absorber and single-absorber options, along with optional gearboxes, make the EX2 equally effective for high-speed horsepower testing or low-speed torque applications where diesel engines dominate.

Data-Driven Performance Gains

In today’s motorsports, data is the competitive edge.

The EX2 comes standard with the SuperFlow WinDyn5 advanced data acquisition system, capturing up to 500 configurable channels to monitor critical engine parameters, including:

• Boost, pressure, and airflow
• Air/fuel ratios and fuel delivery
• Temperature monitoring across critical systems

Automated test sequences and repeatable cycles allow teams to:

• Validate tuning changes confidently
• Quickly identify performance gains or losses
• Reduce variability between test runs

This integration transforms engine development from guesswork into precise, data-driven decision-making, the difference between incremental gains and a championship win.

Built for Reliability Under Extreme Conditions

Engines in tractor pulling, Pro Mod, and diesel racing face some of the harshest conditions in motorsports. Reliability isn’t optional—it’s essential.

The EX2’s stainless steel absorbers resist cavitation and withstand prolonged high-load testing, ensuring consistent performance over time.

Controlled endurance and break-in testing allow teams to:

• Identify potential failure points before competition
• Validate cooling, fueling, and lubrication systems
• Build confidence in engine durability

Faster Testing, Smarter Development

Shop time is valuable, especially during race season.

The SF-Black Widow EX2 maximizes efficiency with:

• Automated test sequences
• Pre-configured test profiles (acceleration, steady-state, break-in)
• Intuitive controls for streamlined operation

Teams can spend less time setting up and more time analyzing results, refining performance, and preparing for the track.

A Competitive Advantage Across Motorsports

The SF-Black Widow EX2, equipped with the SuperFlow WinDyn5 advanced data acquisition system, delivers a clear competitive advantage by integrating engine data directly into testing and analysis. It provides:

• Power capacity for extreme builds
• Control to simulate real-world race and pull conditions
• Integrated data for smarter, faster tuning decisions
• Durability to support long-term engine development

For teams chasing championships, it’s not just about more horsepower—it’s about testing smarter, leveraging real-time data, optimizing every variable, and building consistent, repeatable performance.

Take Your Engine Development Further

In motorsports, small gains lead to big wins.

The SF-Black Widow EX2 lets teams simulate real-world conditions, capture critical data, and push engine performance with confidence—whether on the pulling track, the drag strip, or in diesel racing.

Whether refining a championship-winning setup or developing your next record-breaking build, the right dynamometer is essential to success.

Ready to take your testing program to the next level?
Learn more about the Black Widow EX2. 
Connect with our team, or request a consultation to discuss your specific application.