How to Disable Ford F-150 Speed Limiter?

Key Takeaways:

The Ford F-150 speed limiter is a safety feature to prevent driving at unsafe speeds. It can typically be set between 65-85 mph.
The most common methods to disable the speed limiter are using a tuner, removing the MyKey feature, changing settings, or cancelling the limiter.
Disabling the speed limiter could void the vehicle warranty and raises safety concerns, so consult a mechanic first.
Alternative options like adjusting the limiter to a higher speed may be safer than fully disabling it.
Re-enabling the limiter is recommended for safety, especially if others drive the vehicle.

Introduction

The Ford F-150 pickup truck comes equipped with a speed limiter feature from the factory. This electronically limits the maximum speed the vehicle can travel, typically in the range of 65-85 mph. The speed limiter is intended as a safety measure to prevent driving at dangerously high speeds.

While some drivers may find the speed limiting restrictive, there are ways to disable or adjust the top speed setting on a Ford F-150. This article will provide a comprehensive evaluation of the options for disabling or overriding the F-150 speed limiter. It covers the most common methods DIYers and mechanics use for removal.

The information presented will help F-150 owners understand the feasibility and risks of disabling the speed governor. With proper precautions, temporary adjustments may be possible to allow high-speed running in closed course conditions. However, fully removing protection could impact safety and warranty coverage.

By the end, readers will discover the steps, tools, and considerations for disabling the limiters. This will allow making an informed decision on whether and how to proceed with adjustments for performance needs.

Overview of Ford F-150 Speed Limiter

The speed limiter is a standard feature on Ford F-150 trucks from the factory. It is part of the vehicle’s computerized systems and electronic engine controls. The limiter function is intended to enhance safety by electronically preventing the vehicle from exceeding a preset top speed.

The actual limited top speed can vary based on engine size, axle ratio, and model year of the F-150. But it generally falls in a range between 65-85 mph. Drivers will experience the engine limiting rpm when they reach the maximum set speed.

Ford’s speed limitation system engages automatically when driving. There is no standard way for owners to adjust the limit without interfacing with the truck’s computer. This prevents unintended tampering that could impact safety.

However, with the right tools and expertise, the speed limiter parameters can be changed. Let’s look at the most common options for disabling or overriding the limit.

Why Would You Want to Disable the Speed Limiter?

Before considering removal options, it helps to understand why some F-150 owners might wish to disable the speed limiter:

Increase top speed – The limiter caps maximum speed, which some want to exceed for performance reasons.
Improve acceleration – The system can affect acceleration as revs are capped approaching top speeds.
Eliminate rev limiter – The engine rpm limiting near the top speed may be undesirable.
Enhance towing power – Limiter removal can provide more power for hauling heavy loads up steep grades.
Off-roading – Disabling may improve throttle response and power in low-traction conditions.
Racing applications – Unrestricted speeds may be desired for closed course racing events.

Risks and Precautions When Disabling the Limiter

While the above reasons may make speed limiter removal tempting, it’s crucial to understand the associated risks and precautions:

Disabling can allow dangerously high speeds that substantially raise crash risks.
Operating for prolonged periods at high rpm and speeds can lead to engine damage.
Alterations can potentially void manufacturer’s warranty coverage.
Check local laws, as disabling limiters may violate legal speed governing requirements for certain vehicles.
Re-enable limiter or use lower settings if allowing other drivers to operate the vehicle.
Consult an authorized Ford dealer regarding warranty and ensure insurance coverage remains valid if modifying top speed capabilities.

Methods for Disabling Ford F-150 Speed Limiter

If choosing to proceed with removal after considering the above precautions, here are the most common options:

Use a Tuner Device

One of the most popular methods is to install an electronic tuner device. These plug into the truck’s OBD-II diagnostic port and allow reprogramming the engine control module (ECM).

Devices like the SCT BDX Tuner offer pre-loaded tune files which can eliminate the factory speed limiter parameters. This allows unleashing the engine’s full potential.

Benefits of a tuner include:

Simple plug-in installation. No need to remove ECM.
Tunable via laptop for easy adjustment.
Provides added performance gains beyond just limiter removal.
Can enable changing top speed, shift points, axle ratio settings, etc.
Retains ability to return to stock tune when desired.

The tuner option provides a reversible approach to limiter removal. It may carry less warranty risk than permanently altering ECM settings.

Remove MyKey Limitations

The Ford MyKey feature allows owners to program keys with certain restrictions. This is designed for parents lending vehicles to teen drivers.

MyKey can be used to set lower speed limiters, limit audio volume, and enable other restrictions. If you have MyKey programmed, disabling this can restore full speed capabilities.

Here is the process for removing MyKey:

Insert key into ignition and turn to “on” (do not start engine).
Locate small button on steering column cover. Press and hold until “Clear MyKey” appears on dashboard display.
Press button again to confirm clearing MyKey. The programmed restrictions and settings will be removed.

With no MyKey active, the vehicle should return to normal speed limiter parameters and function.

Modify Speed Limiter Settings

Some DIYers report success in overriding the limiter by accessing settings menus through the dashboard information display. Here’s a general guide to the process:

Scroll to Settings Menu -> Vehicle Settings
Scroll to Speed Limiter section and modify settings. Some note that selecting “Off” may disable.
Move cursor to point after keypad options to access hidden menu
Select “Gameplay Unlocked!” menu
Choose option to disable speed governor

Note that steps may vary by model year. There are risks to improperly changing settings, so proceed with care. Consult forums for tips specific to your F-150.

Cancel Speed Limiter Function

Another option is to put the speed limiter into a standby or cancelled mode. This is done using button shortcuts:

Press LIM CNCL/OFF to place limiter in standby mode.
The LIM indicator will show greyed out when disabled.
To resume normal speed limiting, press and hold RES+ button.

Similar to the settings approach above, this cancellation method essentially pauses limiter function temporarily. It may re-engage after an ignition cycle.

ECU Tuning to Remove Limiter Parameters

For advanced users, directly hacking the engine control unit (ECU) programming can eliminate speed limiter codes permanently. This involves using a tool like HP Tuners to access the ECM and delete the parameters that enable speed governing.

ECU tuning requires expertise, as improper modifications can cause drivability issues or engine damage. And hacking the ECM almost always voids the OEM warranty.

But for mechanically inclined owners, this gives full control over permanently removing all speed caps set by the factory.

FAQs related to Disabling Ford F-150 Speed Limiters

Is it illegal to disable the speed limiter on a Ford F-150?

It is not directly illegal to disable the speed limiter on an F-150 in most jurisdictions. However, once the limiter is disabled, exceeding posted speed limits would be against the law and dangerous. Also, some areas prohibit tampering with factory-equipped speed governing devices.

Will disabling the speed limiter void my truck’s warranty?

Ford can technically void the powertrain warranty if it detects ECU tuning or other modifications that removed the speed limiter. Extended high-rpm operation can also lead to wear not covered under warranty. However, reversibly overriding the limiter using a tuner may be hard to detect and poses less risk.

How high can an F-150 go without a speed limiter?

The actual maximum speed depends on factors like engine power, gearing, and aerodynamics. But many unmodified F-150s can potentially reach over 110 mph without a limiter. Some modified trucks can go even higher. Always observe safe speeds for conditions.

Is there a way to adjust the speed limiter to a higher limit instead?

Yes, most tuning methods like an SCT tuner allow setting a custom top speed limit adjustment while retaining some protection. Raising from 70 to 90 mph may be safer than fully removing. Make small increments and test thoroughly.

Will disabling the speed limiter improve acceleration?

It can help acceleration indirectly since engine rpm won’t be capped at high speeds. But tuning the transmission shift points can optimize acceleration more directly in mid-ranges. Combined with limiter removal, drivers may notice the seat-of-the-pants feel of a faster truck.

How can I re-enable the speed limiter to stock settings?

Tuners and ECU editors allow reflashing back to factory speed limiter settings. For MyKey or settings methods, follow the reverse procedures. It’s wise to re-enable for safety when letting others drive the truck.

Conclusion

The Ford F-150 speed limiter provides a valuable safety benefit by restricting top speed. While it may interfere with some performance aspirations, fully disabling protection raises significant risks. Safer alternatives like adjusting to a higher threshold may strike a balance. For those choosing to proceed with removal, tuners and hacking ECU parameters offer two primary options. But keep safety, legal, and warranty concerns in mind. Re-enabling limiters when not actively needed for closed course racing can help mitigate risks while allowing occasional unrestricted enjoyment.

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