When it comes to tractor tuning and ECU remapping, it’s not enough to simply “feel” the difference in performance — you need real, measurable results. That’s where a tractor PTO dyno (Power Take-Off dynamometer) comes in. At M J Agri Tuning, we use our mobile PTO dyno to ensure every remap is safe, accurate, and delivers proven gains in power and efficiency.

✅ What Is a PTO Dyno?

A PTO dyno is a specialist piece of equipment used to measure the true output power and torque of a tractor through its PTO shaft. It works by connecting to the back of the tractor and applying resistance to simulate real working loads. The dyno then records key data such as horsepower (HP), torque (Nm), and engine RPM.

Unlike guessing or using factory figures, a PTO dyno gives us real-world data — vital for understanding how your tractor is performing before and after tuning.

📊 Why Use a PTO Dyno for Tractor Remapping?

Here’s why PTO dyno testing is a critical part of professional ECU tuning:

1. Accurate Baseline Measurements

Before we carry out any tuning, the dyno gives us a full picture of your tractor’s current performance. This helps us assess if the engine is in good health and whether it's delivering what the manufacturer promised.

2. Safe and Informed Tuning

Our remapping process is based on live data from the dyno, not assumptions. This allows us to apply a custom ECU remap that increases torque and horsepower safely and effectively, without overstressing the engine.

3. Prove the Results

After tuning, we run a second dyno test to compare the figures. Whether it’s a John Deere, Massey Ferguson, or JCB, you’ll see the exact power and torque increase from your performance remap — no guesswork, just proof.

We don’t just “plug in and go.” Our use of a PTO dyno sets us apart from many tuning providers. By testing both before and after remapping, we make sure our customers see exactly what they’re getting — reliable gains, tailored to the way they work.

🏁 Ready to Unleash Your Tractor’s True Potential?

If you're looking for tractor ECU remapping with dyno-proven results, get in touch today. We offer mobile PTO dyno testing, with specialist remaps for all major brands including John Deere, Massey Ferguson, Valtra, New Holland, and JCB.