EFI Multimeter

Koso EFI Multimeter

The Koso EFI Multimeter is a state-of-the-art multifunctional measurement device, specifically designed to monitor engine speed (RPM), temperatures, and various important parameters. Especially for riders who want to precisely monitor and fine-tune their engine, this device offers a wealth of features and user-friendly displays. With functions like a programmable shift light, temperature warning lights, and the ability to connect an O2 sensor, it’s the perfect tool for engine tuning and performance monitoring.

Technical Details:

Tachometer:

• Display Range: 0 ~ 20,000 RPM
• Display Unit: 100 RPM (0 ~ 10,000 RPM), 250 RPM (0 ~ 15,000 RPM), 333 RPM (0 ~ 20,000 RPM)
• Display Type: Bargraph (60 segments)
• Sampling Frequency: < 0.5 seconds (very fast measurement)

Shift Light:

• Adjustable Range: 5,000 ~ 20,000 RPM
• Adjustment Unit: 100 RPM
• A programmable shift light helps the rider recognize the optimal time to shift.

Maximum RPM Memory:

• Display Range for Max RPM: 0 ~ 10,000 / 15,000 / 20,000 RPM (depending on settings)

Cylinder Settings:

• For 2-Stroke: 1, 2, 3, 4, 6 cylinders
• For 4-Stroke: 1, 2, 3, 4, 5, 6, 8, 10, 12 cylinders

Temperature Measurement (Thermometers A/B):

• Display Range: 0 ~ 250°C (32 ~ 482ºF)
• Display Unit: 0.1°C or °F (dual display in °C and °F)
• Temperature Warning Range: Adjustable from 60 ~ 250°C (140 ~ 482ºF)
• Temperature Alarm: Warns if the temperature exceeds the preset threshold.

Air/Fuel Ratio (A/F):

• Display Range: 12.1 ~ 16.8
• Display Unit: 0.1 (for precise air/fuel ratio measurements)

Voltmeter:

• Display Range: DC 8 ~ 18.0 V
• Display Unit: 0.1 V
• Monitors the vehicle's voltage and warns of any issues.

Clock:

• 24-hour clock display to monitor the time during the ride.

Battery & Voltage:

• Battery Type (LCD Display): CR 2032
• Board Voltage: DC 12V
• Effective Temperature Range: -10 ~ 60°C (14 ~ 140°F)

Operating Range:

• Operating Temperature Range: -10 ~ 60°C (14 ~ 140°F)

Size and Weight:

• Device Size: 87.5 x 42 x 20.8 mm
• Weight: Approx. 72g (compact and lightweight)

Features and Benefits:

• Multifunction Display: The EFI Multimeter combines a tachometer, temperature gauge, voltmeter, clock, and air/fuel ratio measurement, making it an essential tool for motorsport enthusiasts and vehicle owners.

• Fast Response Time: With a sampling speed of less than 0.5 seconds, the device can measure even the fastest RPM fluctuations precisely.

• Shift Light and Temperature Warnings: The shift light helps the driver detect the optimal time to shift, while the temperature warning lights (Red for RPM, Blue for Temperature A, and Green for Temperature B) alert the driver to potential overheating issues.

• O2 Sensor (Optional): An O2 sensor (sold separately) can be connected to measure and optimize the air/fuel ratio. This is especially useful for tuning the engine and maximizing performance.

• Air/Fuel Ratio: The precise measurement of the A/F ratio (12.1 ~ 16.8) helps optimize the engine’s combustion process, resulting in better performance and efficiency.

• Compact Size: With a compact size of 87.5 x 42 x 20.8 mm and weighing only 72g, the device is easy to install and saves space.

Conclusion:

The Koso EFI Multimeter is an extremely versatile and powerful measurement tool that not only monitors RPM but also temperatures, voltage, and the air/fuel ratio. The ability to connect an O2 sensor and adjust the device for various engine and cylinder configurations makes it an indispensable tool for any motorsport enthusiast or owner of a high-performance vehicle. With its practical features and compact design, it provides a precise and user-friendly solution for optimizing vehicle performance.