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Fummins Tuning Group

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Fummins Apps Pedal Module

Here is some FYI info on the old school mechanical vs our digital module



Here is a data log WOT running the mechanical bracket, and this customer is ordering our module due to binding.



Real World testing

The Data Doesn't Lie: 15% Power Loss Found

This is a real-world data log from a customer running a mechanical throttle bracket assembly. If you look at the TPS (%) and Accel D (%) readings, you’ll see the failure point: 85.5% maximum throttle position. Even with the pedal pushed to the floor, the mechanical design is physically incapable of achieving a full 100% signal.

  • The Power Bottleneck: By capping out at 85%, you are leaving significant power and torque on the table. No amount of "good custom tuning" can fix a mechanical linkage that physically won't reach the target.

  • The "Clunky" Factor: You can see in the graph how inconsistent the signal is. Mechanical pivots and cables introduce "slop" and binding, preventing the smooth, linear sweep required for modern engine management.

  • Outdated Engineering: This log is the perfect example of why mechanical brackets are a step backward. They are bulky, prone to failure, and, as proven here, they simply don’t work

     as advertised.

The Digital Solution

Our Fummins APPS Pedal Module is 100% digital. Because there are no physical linkages to bind or stretch, it delivers a perfect 0–100% sweep every single time.

Stop guessing and start logging. If you want a truck that actually hits the numbers your tuner is calling for, you need a digital signal that can keep up.


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