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Engine Tuning and Torque Management

2:42
21:28
184.6K views

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Mark Martin's "Hot Rod" Newell Coach: Huge Power Compound Turbo Cummins & Stories From The Road!

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What happens here

After installing the compound turbo system, the engine's electronic control unit (ECU) must be custom-tuned to manage the increased power and torque effectively. This involves adjusting turbo mapping, fuel mapping, and crucially, implementing specialized torque management strategies to prevent damage to the transmission and other drivetrain components. Dyno testing is essential to measure the actual horsepower and torque at the tires and to refine the tuning for optimal performance and reliability. Close collaboration with the transmission manufacturer (e.g., Allison) may be required to ensure the transmission can safely handle the increased power output.

Goal: Optimize engine performance and protect drivetrain components from excessive power.

Tools and materials

  • Diagnostic Tools — Monitoring engine parameters during tuning and testing
  • Dyno Machine — Measuring engine horsepower and torque and optimizing tuning
  • Engine Tuning Software PDI — Adjusting turbo, fuel, and torque management maps

What they say

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How much power does it make stock versus now? So these engines and we've done a lot of newles uh customers work at our shop and had them on the dyno. their consistency between f 490 to the tire and 510. Mark's engine, I believe, if I remember right, was right around 740 2480 torque, at the tire at the tire. And there's about a 10% to 15% loss in the drivetrain. even know the drive shaft's so short. Some special tuning to go along with having that much horsepower that torque management had to be managed differently than it would be on a normal coach with just a tuner or stock because it made was enough power. Mark was saying it sounded like it was tearing the transmission out so we had to do some special tuning there. Was it actually or was that the vibration caused by something else? Uh, we never seen any slip coats or anything like that, but I think what it really was is it was actually breaking the tires loose, even, you know, at a 60,000 lb uh, motor coach.

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