This guide explains every setting on your Kobis controller and how to adjust it for the best performance. Features vary by model — check your controller's specification page if you are unsure which features apply.
Chips set the base resistance of the controller. The controller comes with 10 chips ranging from 15 ohm (fastest) to 141 ohm (slowest). Extra chips are available separately if you need a wider range.
How to select a chip: Set the Resistor (sensitivity) knob to position 5 (middle). Start with a chip in the middle of the range and test on the track. If the car is too fast, move to a higher-numbered chip. If it feels too slow or sluggish, move to a lower-numbered chip. Once the speed feels right, fine-tune with the Resistor knob.
Need more range? Extra chips are available as accessories — faster chips (9 ohm, 12 ohm), slower chips (168 ohm, 186 ohm), and an adjustable chip (0–160 ohm). View accessories.
The brake resistor controls how hard the car stops when you release the trigger. Turn towards Hard for a firm, fast stop. Turn towards Soft to reduce braking force. Start with a medium setting and adjust to your driving style.
The brake adjustment switch adds extra resistance to the brake circuit, softening braking force beyond the base resistor setting. Toggle it to Soft for a gentler stop.
The resistor sets how quickly the car responds to trigger input — the attack or sensitivity of the controller. A faster (lower) setting gives more aggressive power delivery. A slower (higher) setting makes the trigger more progressive.
Traction Control limits mid-range power, making the car easier to drive through corners. It works by inserting a 10 ohm resistor on the last resistor pin, which reduces power delivery at partial trigger.
The electronic choke uses a transistor circuit to reduce the maximum output voltage, limiting the car's top speed. Adjusting from Fast to Slow progressively drops the output voltage.
The wire choke uses a coil of resistance wire to smooth power delivery and reduce top speed. A 16-position rotary switch selects the amount of wire in the circuit, from 0 to 42 feet.
Anti-brake allows the car to rotate more freely through corners by releasing braking force mid-corner. Available on models A3 and P4.
When you release the trigger, the standard brake applies immediately. With anti-brake enabled, this is delayed or reduced for the first moment, letting the car's momentum carry it through the corner more naturally. The High / Low adjustment controls how much anti-brake effect is applied.
In the PS10 and P4, the main transistor bypass is built directly into the 16-position wire choke rotary switch. Positions 1–13 have the bypass active, giving choke adjustment from 0 to 26 feet with the transistor bypassed. At position 14 the bypass turns off. Positions 15 and 16 use a resistor-based choke for the slowest settings.
The latest version adds a dedicated bypass button that temporarily overrides the current choke position. Press and hold for instant full power — release to return to your preset choke level.
Race example: Your choke is set to position 4 for consistent lap times. When overtaking or on a qualifying lap, press the bypass button for full power instantly — without touching the choke setting. Release it and the controller returns to position 4.
The Blast Relay bypasses the choke and resistor circuits entirely, delivering full track voltage directly to the car. With the toggle switch set to On, squeezing the trigger to full engages the Blast Relay. The Red LED confirms it is active. Release either to deactivate.
Three wires connect your controller to the track and power supply. Each plug has a specific function — connecting them incorrectly will damage the controller.
Warning: The controller is NOT protected against incorrect wiring. Always verify plug connections before powering on. Connecting the wrong plug to the wrong socket will damage the controller.
Each Kobis model is built for a different style of racing. Use this summary to choose the right controller for your setup.
Wire choke, no anti-brake. The best choice for brushless motors — cleaner signal path, extended choke range (0–42 ft), lighter build.
View PS10Wire choke with anti-brake. Best for brushed motors in Open12 and Production 24 racing. Includes improved brake power management.
View P4Anti-brake controller for brushed motors. Third-generation anti-brake system optimized for Open12 and Production 24.
View A3Electronic transistor choke, no anti-brake. Same electronics as PS10 in a more compact build. Great all-rounder for brushless setups.
View S10