Yes, you can disable the governor on a golf cart to increase its top speed. Disabling the governor, often referred to as golf cart speed limiter removal or bypass golf cart speed governor, is a popular modification for owners seeking better performance. This guide will walk you through the process for major brands like E-Z-GO, Club Car, and Yamaha.
Why People Want More Speed
Many golf cart owners want faster carts. The factory settings limit speed for safety and battery life. If you use your cart for more than just short trips on the fairway, you might need more speed. This modification can turn a slow cart into a zippy neighborhood cruiser. It’s a key step in increasing golf cart top speed.
Safety First: A Crucial Warning
Before we start, you must know the risks. Removing speed restriction golf cart settings changes how the cart performs.
- Safety Risk: Faster carts are harder to stop. Tires and brakes might not be rated for high speeds.
- Legal Issues: Speeding on public roads is illegal in most places. Check your local laws first.
- Warranty Void: Tampering with the electronic speed control voids your factory warranty immediately.
- Battery Strain: High speeds drain batteries much faster. Expect shorter run times.
Only proceed if you accept these risks and plan to use the cart safely.
Inspecting Your Golf Cart Type
The method for disabling the governor depends entirely on your cart’s brand and power source (electric or gas). Electric carts use electronic speed controllers, while gas carts use mechanical governors attached to the engine.
Here is a quick look at what you might be dealing with:
| Cart Brand | Power Type | Common Speed Control Method |
|---|---|---|
| E-Z-GO | Electric | Speed Sensor/Controller Chip |
| Club Car | Electric | Seetek Controller or Speed Chip |
| Yamaha | Electric/Gas | Electronic Module or Carburetor Linkage |
Electric Cart Speed Control: General Concepts
Most modern golf carts are electric. They do not have a traditional mechanical “governor” like a lawnmower engine. Instead, they rely on the Electronic Speed Controller (ESC). Disabling E-Z-GO speed control or modifying Club Car golf cart speed means reprogramming or tricking this controller.
The Role of the Speed Sensor
The speed sensor tells the controller how fast the wheels are turning. To go faster, you need to fool this sensor or adjust the controller’s programming limits.
How to Disable the Governor on an E-Z-GO Golf Cart
E-Z-GO carts often use a simple method involving the speed sensor or a specific wire harness. This is a common way to achieve a performance upgrade golf cart speed.
Locating the Speed Sensor
The speed sensor is usually found near the differential or the transaxle. It often looks like a small plastic or metal plug with wires running to it.
Method 1: Speed Sensor Bypass (Older Models)
On some older E-Z-GO models (like the Medalist or TXT), you can sometimes bypass the speed sensor completely.
- Turn Off Power: Always disconnect the main battery pack before working on wires.
- Locate Wires: Find the speed sensor wires (usually three wires going into the sensor housing).
- Bypass Procedure: Some manuals suggest connecting two specific wires together or installing a jumper wire. Warning: Wire colors vary greatly. Consult your specific model’s wiring diagram before cutting or splicing. Incorrect wiring can damage the controller.
Method 2: Controller Programming (Newer Models)
Newer E-Z-GO carts use programmable controllers (like the Curtis controller). Tuning golf cart speed controller settings is often the best approach here.
- Access Port: Locate the controller, usually under the seat or front panel. Look for a small communications port (often an RJ-style plug).
- Required Tool: You will need an E-Z-GO handheld programmer or a laptop with the proper software and interface cable. This tool is not cheap, but it allows precise adjustments.
- Adjust Limits: Connect the programmer. Navigate the menu to the speed settings. You can often change the forward speed limit (FWD Max Speed) from the factory setting (usually 12-15 mph) up to the maximum limit the controller allows (often 19-25 mph).
- Save Changes: Save the new settings and disconnect the programmer. Test the cart slowly first.
Method 3: Lifting Speed Chip Golf Cart (If Applicable)
Some E-Z-GOs utilize a removable “speed chip” or plug that dictates the top speed setting (e.g., 18 mph vs. 22 mph).
- Find the speed chip module, often plugged into the main wiring harness near the controller.
- Check if the chip has different slots or settings. Replacing the current chip with a higher-speed version (or flipping a switch if present) can raise the speed limit instantly without reprogramming.
How to Increase Speed on a Club Car Golf Cart
Club Car carts are known for their robust Seetek controllers. Modifying Club Car golf cart speed usually involves adjusting the controller’s programming or replacing a speed magnet.
Method 1: Controller Programming (Precedent and DS IQ Models)
Like E-Z-GO, modern Club Cars rely on controller programming for speed limits.
- Controller Location: The controller is usually under the floorboard or near the batteries.
- Access: You need an official Club Car diagnostic tool or a third-party programmer compatible with the Seetek system.
- Settings Adjustment: Access the “Speed Setting” or “Maximum Forward RPM” parameters. Increase these values within the limits of the controller hardware.
- Motor Considerations: If you increase the speed too much, the stock motor might overheat. Be mindful of the motor’s maximum safe RPM.
Method 2: Speed Magnet Replacement (Older DS Models)
Older Club Car DS models (pre-2001 IQ systems) often used a small magnet attached to the rear axle or differential. This magnet triggers a sensor, measuring wheel speed.
- Locate Magnet: You must raise the rear of the cart and look near the axle assembly. You will see a small magnet spinning with the axle.
- Removal/Replacement: Some procedures involve carefully removing the magnet entirely, which tells the controller the speed is zero, thus overriding the limit (though this can cause errors on some systems). A safer method is replacing the magnet with a “high-speed” version that has fewer magnetic poles, tricking the sensor into reading a slower speed than reality, thus allowing the cart to go faster.
- Reassembly: Reinstall everything carefully. Always check for proper clearance so the new magnet doesn’t hit anything.
Adjusting Speed on Yamaha Golf Carts
Yamaha carts present a mix of solutions, depending on whether they are two-stroke, four-stroke gas, or electric. Yamaha golf cart governor adjustment is most straightforward on gas models.
Gas Cart Governor Adjustment
Gas engines use a mechanical governor linked to the carburetor linkage. This limits engine RPMs.
- Locate the Governor: On a four-stroke engine, the governor mechanism is typically on the side of the engine block, connected by linkage rods to the throttle plate in the carburetor.
- Reducing Tension: The governor works by resisting throttle opening once a certain RPM is reached. To increase speed, you need to reduce the tension on the governor spring or adjust the linkage travel.
- Adjustment Steps (General):
- Locate the adjustment screw or clip on the governor assembly.
- Loosening the spring tension slightly allows the throttle to open further before the governor kicks in.
- Caution: Over-adjusting can cause the engine to over-rev and destroy itself rapidly. Start small (a quarter turn) and test carefully. This is a fine-tuning process.
Electric Yamaha Carts
Electric Yamahas generally follow the controller programming path similar to E-Z-GO and Club Car, often requiring specialized diagnostic tools to access the speed settings on the onboard computer.
Essential Performance Upgrades for Higher Speeds
Simply removing the governor or golf cart speed limiter removal might give you an extra 3-5 mph, but if you want significant speed increases (over 20 mph), you must look at other components. These are part of a comprehensive performance upgrade golf cart speed package.
Upgrading the Controller
The factory controller is often the primary bottleneck. It limits both speed and torque.
- Higher Amperage Controller: Installing a controller rated for higher amperage (e.g., moving from a 250A to a 300A or 400A controller) allows the motor to draw more power, resulting in higher speeds and better acceleration. This is crucial when tuning golf cart speed controller for maximum output.
Motor Replacement
If the controller is upgraded, the motor might not be able to handle the extra power efficiently.
- High-Speed Motor: Motors are often rated by RPM capability. Replacing the stock motor with a high-speed aftermarket motor designed to handle the increased amperage from the new controller is vital for reaching top speeds safely.
Tire and Wheel Changes
Tires play a huge role in actual measured speed.
- Larger Diameter Tires: If your speedometer or controller is calibrated for 18-inch tires, installing 20-inch or 22-inch tires will make the cart travel further with every rotation of the axle. This results in a higher true speed, even if the controller output remains the same. You may need a lift kit to accommodate larger tires.
Battery System Improvement
More power requires better fuel (electricity).
- Increase Voltage: Switching from a 36V system to a 48V system (or 48V to 72V on specialized carts) directly increases the potential top speed because the motor spins faster at higher voltage. This upgrade is expensive but offers the most significant speed gain.
- Deep Cycle Batteries: Ensure you use high-quality, deep-cycle batteries that can sustain the higher discharge rates needed for high-speed running without quick voltage sag.
Troubleshooting After Speed Modification
After attempting golf cart speed limiter removal, you might run into problems.
Symptom 1: Cart Won’t Move or Moves Slowly
- Check Connections: Ensure all wiring harnesses are secure, especially if you bypassed a sensor. A loose connection mimics a failed component.
- Controller Error Codes: Many modern controllers display error codes via flashes on the solenoid or diagnostic light. Look up the code for your controller model (Curtis, Navitas, etc.) to pinpoint the issue. An error code might mean you exceeded the safe programmed limits.
Symptom 2: Cart Shuts Down After a Short Run
This usually means overheating or power limits being reached.
- Motor Overheating: The stock motor is struggling to keep up with the new demands. Allow it to cool down. You need a motor upgrade.
- Controller Thermal Shutdown: The controller senses excessive heat and shuts down to protect itself. Ensure the controller has good airflow.
Symptom 3: Speed is Only Slightly Increased
If you only gained 1-2 mph, the factory setting likely has multiple layers of restriction.
- Check Magnet/Chip: If you only adjusted the controller, you might have missed a physical speed limiter like the magnet on a Club Car or a physical chip setting on an E-Z-GO.
Legal and Practical Considerations for Higher Speeds
When you successfully achieve increasing golf cart top speed, you change the machine’s fundamental purpose.
Public Road Use and Insurance
If you plan to drive on paved roads (even low-speed neighborhood streets), you must check local ordinances. Many areas require golf carts operating above 15-20 mph to be classified as Low-Speed Vehicles (LSVs). LSV requirements often include:
- Headlights and Taillights
- Brake Lights
- Turn Signals
- Windshield
- Seatbelts
- VIN Number
- Specific Insurance Coverage
If you are removing speed restriction golf cart settings without meeting LSV standards, you risk fines and liability in case of an accident.
Maintaining Brakes and Suspension
Stock golf cart brakes are designed for speeds around 12–15 mph. When operating at 25 mph, stopping distances increase dramatically.
- Brake Upgrades: Consider replacing pads/shoes with performance versions or installing hydraulic brake kits if available for your model.
- Tire Quality: Ensure your tires are rated for higher speeds and have good tread. Cheap, worn tires are dangerous at high speeds.
Detailed Steps for Common Tuning Scenarios
Let’s summarize the typical procedure for achieving the desired result through tuning golf cart speed controller options.
Scenario A: E-Z-GO TXT (2014+) – Focus on Controller Programming
- Safety: Park on a level surface. Disconnect the negative battery cable.
- Locate Controller: Usually found under the forward speed assembly cover.
- Connect Programmer: Attach the handheld programmer tool to the controller’s designated port.
- Power On: Reconnect the battery. Turn the key switch to the ON position.
- Access Settings: Navigate the programmer menu. Select “Speed Parameters.”
- Adjust Max Forward Speed: Change the value from the stock setting (e.g., 12.5 MPH) to your desired limit (e.g., 19.5 MPH). Note the maximum allowed speed for your controller model.
- Save and Exit: Save the new profile and power down the cart.
- Test: Test at low speed first. Monitor motor temperature after a brief high-speed run.
Scenario B: Club Car DS (Pre-2001 IQ) – Focus on Magnet Replacement
- Lift Cart: Raise the rear axle using sturdy jack stands. Secure the cart.
- Access Differential: Remove the rear wheels for better access to the axle housing.
- Locate Sensor: Find the small sensor bolted near the axle end cap that reads the speed magnet.
- Remove Old Magnet: This often requires removing the axle cover plate or the sensor assembly itself to pull out the existing magnet.
- Install New Magnet: Install the new, lower-pole-count magnet or block the sensor if you are attempting a full bypass (less recommended).
- Reassemble: Reinstall wheels, lower the cart, and reconnect batteries. Test functionality.
Final Thoughts on Performance Modification
Golf cart speed limiter removal is achievable for most carts. However, it shifts the focus from simple utility to performance modification. For the best results and safety, approach this task systematically:
- Identify your cart’s specific speed control mechanism.
- Use the correct tools (especially programmers for modern electric carts).
- If you are making significant performance upgrade golf cart speed changes, upgrade the motor and controller together.
- Always prioritize safety and local laws over achieving the highest possible speed number.
Frequently Asked Questions (FAQ)
Q: Will disabling the governor hurt my electric golf cart motor?
A: It can, if done incorrectly or excessively. Electric motors have maximum safe RPM ratings. If you raise the controller voltage or amperage too high without a matching high-speed motor, the stock motor will overheat and fail quickly.
Q: Can I just cut a wire to bypass the speed control?
A: On some very old models, yes. On most modern carts (Club Car IQ, E-Z-GO PDS/TXT), cutting the wrong wire will either cause controller failure or lock the cart into a limp mode, requiring expensive reprogramming to fix. It is safer to use the programming tool or known magnet replacement procedures.
Q: What is the easiest way for modifying Club Car golf cart speed?
A: For newer Club Cars, the easiest method is usually accessing the controller settings via a compatible handheld programmer to adjust the speed limit digitally.
Q: If I do a golf cart speed limiter removal, do I need to change my batteries?
A: If you only remove the electronic limit slightly (e.g., going from 12 mph to 17 mph), your existing batteries might suffice for a while. If you plan on high speeds (20+ mph) or significantly increasing voltage (to 48V), you absolutely need high-quality, deep-cycle batteries capable of delivering high current draw without excessive voltage sag.
Q: Is tuning golf cart speed controller difficult for a beginner?
A: Controller programming requires careful attention to detail. If you follow exact instructions specific to your controller model (like Curtis or Navitas), it is manageable. However, if you are unsure, it is best to hire a specialized golf cart technician.