Yes, you can often disable the governor on golf carts, especially those with electric motors, to increase golf cart top speed. Disabling this feature is a common goal for owners looking to maximize their cart’s potential. This guide shows you how to approach golf cart speed limiter removal for both electric and gas models safely and effectively.
Why Carts Have Speed Governors
Golf carts come with speed limiters, often called governors, for good reasons. Manufacturers set these limits for safety and to meet legal road use standards in some areas. The governor controls how fast the motor or engine can spin.
Electric Cart Speed Controls
Electric golf carts use a speed controller, which is essentially a smart computer for the motor. The controller limits the power sent to the motor, keeping the speed down.
Gas Cart Speed Controls
Gas golf carts usually use a physical or electronic restrictor on the engine, often tied to the carburetor or ignition timing. This device limits engine RPMs, thus limiting speed. We will look at golf cart engine restrictor removal later.
Step 1: Know Your Cart Type (Gas vs. Electric)
The method for disabling the governor totally depends on your cart’s power source. Do not try to use an electric cart method on a gas cart, or vice versa.
| Cart Type | Common Limiting Device | Difficulty Level | Primary Goal |
|---|---|---|---|
| Electric | Speed Controller / Software | Easy to Medium | Bypass golf cart governor |
| Gas | Carburetor Restrictor / Linkage | Medium to Hard | Golf cart engine restrictor removal |
Disabling the Governor on Electric Golf Carts
Most modern electric carts rely on the motor controller for speed limits. Modifying these settings is the key to golf cart performance tuning.
Identifying the Controller
First, you must find the motor controller. It is usually a black box located under the driver’s seat or near the batteries. Look for prominent brand names like Curtis, Navitas, or Alltrax.
Method 1: Adjusting the Speed Setting Chip (If Available)
Some older or simpler controllers have physical jumper wires or switches that allow for golf cart speed setting adjustment.
- Locate the Adjustment Panel: On certain controllers, you might find small colored wires or dip switches.
- Check the Manual: Look up your specific controller model online. Manuals often show which switch settings mean “High Speed” or “Tow Mode.”
- Change the Setting: Carefully move the jumper or flip the switch according to the manual’s high-speed setting.
Caution: Not all controllers have this easy option. If you cannot find switches, you likely need Method 2.
Method 2: Accessing Controller Programming (The Advanced Way)
For many high-end controllers, the speed limit is programmed directly into the software. This requires specialized tools. This is where true golf cart controller modification happens.
What You Need:
- A handheld programmer device specific to your controller brand (e.g., a Curtis handheld device).
- The necessary cables to connect the programmer to the controller port.
The Process:
- Connect the Programmer: Plug the handheld device into the controller’s diagnostic port. This port often has a small cover nearby.
- Access Parameters: Turn the key switch to the “ON” position. Power up the programmer.
- Navigate to Speed Limits: Scroll through the menus. You are looking for parameters like “Maximum Speed,” “Field Voltage Limit,” or “Throttle Percentage Limit.”
- Increase the Value: If the limit is set to 15 MPH, try increasing it to 20 or 25 MPH. Be careful not to set it too high, as this can strain the motor or draw too much current.
- Save Changes: Save the new settings and disconnect the programmer.
This direct adjustment is the most effective way for golf cart speed limiter removal on modern electric carts.
Method 3: The Solenoid Bypass (For Emergency or Older Carts Only)
In some older series-wound motors, speed is limited by how much battery power reaches the motor. A golf cart solenoid bypass temporarily forces full battery voltage to the motor for maximum speed bursts. This is not a permanent solution for sustained speed increase.
Warning: Bypassing the solenoid is dangerous. It often bypasses the safety systems, leading to excessive heat, premature battery drain, and potential motor damage. This is mainly useful for testing or extreme emergency situations, not daily driving.
Disabling the Governor on Gas Golf Carts
Gas carts require mechanical or electronic intervention to remove the engine’s speed limits. Golf cart engine restrictor removal usually involves tuning components.
Method 1: Adjusting the Throttle Cable Linkage
Many gas carts have a physical stop that prevents the throttle from opening all the way. This is the easiest mechanical restriction to address.
- Locate the Carburetor Linkage: Follow the throttle cable from the gas pedal down to the engine carburetor.
- Find the Throttle Stop Screw: Look for a small screw or lever that physically stops the throttle plate from moving past a certain point.
- Adjust or Remove the Stop: Carefully turn the screw out slightly or adjust the linkage. You are allowing the throttle plate to open wider.
- Test Gently: Start the engine and gently press the pedal. If the engine revs higher and the cart accelerates faster, you have successfully bypassed the mechanical stop.
Method 2: Tuning the Carburetor Jets
For higher performance, you might need to change the size of the carburetor jets. If the engine is starved for fuel at higher speeds, it will run slow.
- Drain the Carburetor Bowl: Shut off the fuel and drain any gas from the bowl.
- Remove the Float Bowl: Carefully take off the bottom part of the carburetor.
- Replace the Jet: The main jet controls fuel flow at higher throttle settings. Replace the stock jet with one that has a slightly larger opening (e.g., moving from a size 90 to a size 95). Check online forums for recommended jet sizes for your specific engine model (like a Robin or Kawasaki).
- Reassemble and Test: Put everything back together. The engine should now receive more fuel at high RPMs, allowing you to increase golf cart top speed.
Method 3: Modifying Ignition Timing (Advanced Gas Tuning)
On some gas engines, the timing of the spark plug firing is conservative to keep the engine slow and clean. Advancing the timing can release more power.
Warning: Incorrect timing can cause engine knocking, overheating, and serious internal damage. This should only be attempted if you are very familiar with small engine mechanics.
- Locate the Flywheel: The timing is often adjusted by rotating the flywheel slightly when installing it.
- Advance Timing: This usually involves loosening the flywheel nut, rotating the flywheel a small amount (often just a few degrees) toward the direction of rotation, and retightening. Consult your engine’s service manual for the exact timing specifications.
The Role of Other Modifications in Speed Increase
Simply removing the governor might not give you the speed boost you desire, especially if other components are holding you back. To truly maximize performance after golf cart speed limiter removal, consider these related upgrades:
Tire Size and Lift Kits
When you install a lift kit golf cart speed adjustment becomes necessary. Larger tires effectively change the gear ratio.
If you put on taller tires, the motor has to spin fewer times to cover the same ground distance. This inherently increases top speed but also puts more strain on the motor and controller because the load increases.
- Electric Carts: If you go significantly larger than stock tires (e.g., over 23 inches), you must reprogram the controller to account for the new tire circumference. Otherwise, the speedometer will read incorrectly, and the controller might overheat trying to manage the load based on old data.
- Gas Carts: Larger tires increase the mechanical load, potentially requiring the jetting adjustments mentioned above to maintain power.
Upgrading the Controller and Motor
The stock controller is programmed with limits. To sustain higher speeds safely, you often need to upgrade the brain of the cart. This moves beyond simple disabling golf cart speed chip methods.
If you want speeds over 20 MPH consistently, look for high-performance controllers (e.g., Alltrax or Navitas controllers rated for higher amperage). A higher-amperage controller feeds more power to the motor, leading to higher torque and speed, provided the motor can handle it.
Safety and Legal Considerations After Governor Removal
Removing the speed limiter changes how your golf cart operates. You must consider safety and local laws before hitting the road faster than intended.
Safety First
- Brakes: Stock brakes are designed for the factory top speed. Faster speeds require longer stopping distances. Ensure your brakes are in excellent condition.
- Tires: Stock tires are often not rated for speeds exceeding 15-20 MPH. High-speed operation can cause premature wear or failure.
- Motor Heat: Pushing the motor harder generates more heat. Monitor the controller and motor temperature, especially on steep hills or during long runs.
Legal Issues
Many golf carts are street-legal only up to a certain speed limit (often 20 MPH). If you modify your cart to go significantly faster, it might lose its classification as a Low-Speed Vehicle (LSV) or neighborhood electric vehicle (NEV). Check your local municipal and state laws regarding golf cart usage on public roads. Exceeding the legal limit can result in fines or having your vehicle impounded.
A Comparison of Tuning Approaches
This table helps summarize the different approaches to golf cart performance tuning:
| Tuning Goal | Electric Cart Method | Gas Cart Method | Impact on Cart Life |
|---|---|---|---|
| Small Speed Boost (2-3 MPH) | Minor controller setting adjustment | Carburetor stop adjustment | Low Risk |
| Moderate Speed Increase (4-7 MPH) | Controller reprogramming/Software update | Carburetor jetting change | Medium Risk |
| Maximum Performance | Controller/Motor upgrade package | Full carburetor rebuild/Timing advance | Higher Risk (Needs cooling/Fuel management) |
Advanced Electric Tuning: The Navitas Controller
For many modern electric carts (like newer EZ-GO RXV or Club Car Tempo models), manufacturers often use advanced controllers like Navitas. These controllers are highly software-dependent, making disabling golf cart speed chip functionally similar to accessing deep programming menus.
If you have a Navitas system, you often use a dedicated Bluetooth app (like Navitas HD Remote App) paired with a Wi-Fi dongle connected to the controller.
- Install Dongle: Connect the dongle to the controller diagnostic port.
- Connect Phone: Use your smartphone to connect to the Navitas Wi-Fi network broadcast by the dongle.
- Open the App: Launch the app. You will see options for acceleration curve, regenerative braking strength, and maximum speed limits.
- Adjust Speed Limit: Increase the programmed top speed setting directly through the app interface.
- Apply Settings: Save the configuration. The cart should immediately reflect the new speed capabilities.
This digital approach is much cleaner than physically soldering wires or dealing with mechanical linkage adjustments.
Troubleshooting Common Speed Limit Issues
If you try to bypass golf cart governor settings and see no change, consider these common problems:
1. Battery Health (Electric Carts)
Weak or old batteries cannot deliver the high amperage required for high speeds, even if the controller is programmed for it. A poor battery will result in slow acceleration and a low top speed. Check battery voltage under load.
2. Tire Pressure and Inflation
Under-inflated tires create rolling resistance. This acts like a constant drag brake, preventing the cart from reaching its full potential speed, regardless of governor removal. Always check that tires are inflated to the PSI listed on the sidewall.
3. Fuse or Wiring Issues (Gas Carts)
If you adjusted the carburetor linkage on a gas cart and the engine seems to bog down or hesitate severely rather than accelerating, you might have an air/fuel mixture issue caused by a dirty or improperly sized jet. Also, check all primary ignition fuses.
4. Controller Lockout
Some high-end fleet management systems lock controllers remotely. If you are leasing a cart or bought it from a large resort fleet, the controller might be electronically locked by the previous owner, preventing user access via programmer. In this case, you might need to contact the original dealer or look into replacing the controller entirely for full control.
Conclusion on Governor Modification
Disabling the governor on your golf cart is a straightforward process for electric models that often involves golf cart controller modification through programming. For gas carts, it typically involves physical golf cart engine restrictor removal at the carburetor or throttle stop. Always remember that going faster requires better components—check your tires, brakes, and electrical systems to ensure a safe and enjoyable ride after you successfully increase golf cart top speed.
Frequently Asked Questions (FAQ)
What is the easiest way to bypass golf cart governor on an electric cart?
The easiest way is if your controller has external dip switches or jumpers set for speed adjustment. If not, using a brand-specific handheld programmer to adjust the software limits is the next easiest and safest method for golf cart speed setting adjustment.
Will removing the governor void my warranty?
Yes. Any modification to the speed limiting system, whether through controller reprogramming or mechanical changes, will almost certainly void the warranty on the motor, controller, and possibly the entire drivetrain system.
How much speed can I realistically gain?
On a standard golf cart limited to 12-15 MPH, you can often safely gain 4–8 MPH by removing the governor and optimizing settings. Pushing past 25 MPH usually requires significant investment in better controllers, motors, and battery systems.
Is it legal to use a lift kit golf cart speed adjustment on public roads?
This depends entirely on where you live. Most areas have strict laws classifying golf carts. If your modifications make the cart exceed the legal LSV speed limit (often 20 MPH), you risk fines and citations for operating an unregistered or unsafe vehicle on public roads.
What if I only want more torque, not top speed?
If you need more pulling power (torque) for hills or towing, focus on increasing the amperage rating of your controller. This is different from speed setting adjustment. Higher amperage allows the motor to pull more current when needed, improving low-end grunt without drastically increasing top speed, though a slight increase may occur.