The Motty AFR Tuner is an all in one package tuning system for providing all the necessary features for automatically custom mapping a typical naturally aspirated fuel injected motorcycle engine.

The Motty AFR Tuner is aimed at the motorcycle engine enthusiasts and offers a never before seen flexibility and level of control over the fueling of the engine.

Modifying motorcycles for racing or street riding was always popular with their owners. Installing aftermarket performance components such as exhaust systems, air filters or even internal engine modifications are very common. However the stock engine management systems found on the motorcycles of today do not compensate for the improved air flow of these aftermarket components which leads to the engine being operated out of its optimum air-fuel mixture range. In most cases this only means that the output power is below what the given modification would be capable of with correct mixture ratio, but in extreme cases it can lead to engine damage from internal overheating or detonation.

The Motty AFR Tuner was created to solve this problem. It automatically controls the air-fuel ratio of the intake charge according to the user defined target air-fuel mixture ratio map and it continuously maintains this even if new modifications are made to the motorcycle or slow changes like air filter clogging or engine wear take place.

• Digital wideband lambda sensor controller for high precision air-fuel mixture ratio measurement. The wideband oxygen sensor technology allows measuring the air-fuel mixture ratio accurately in all possible engine conditions from idle to full load.

• Fuel injection control with two high resolution 14x73 cell fuel injector control maps. Off grid map values are calculated with 3D interpolation and the map resolution is especially detailed in the low throttle regions to deliver the smoothest off throttle engine response.

• Automatic fuel injection self mapping for providing the engine with user defined air-fuel mixture ratios in all engine conditions. The two fully user editable target air-fuel ratio maps share the same 14x73 cell resolution and sophisticated interpolation algorithms as the injector maps allowing optimizing the engine for different goals in different engine conditions. For example a rich mixture for best power in the high load areas, a leaner mixture for good fuel economy in cruising conditions and a richer mixture for good throttle response in the low throttle regions.

  The automatic self mapping feature utilises the real-time wide band lambda measurement and the fuel injector control capability of the Motty AFR Tuner to progressively reach the target air-fuel ratio by simply riding the motorcycle.

• Integrated data logger for recording the most important engine parameters: air-fuel ratio, engine speed, throttle position, gear position (on models equipped with the sensor), coolant temperature, vehicle speed and an external 0-5V user input.

• Top speed derestriction for Suzuki GSX-R1000 and GSX1300R Hayabusa motorcycles. The maximum engine revolution of these motorcycles is limitted to a lower value in top gear by the ECM. The Motty AFR Tuner can overcome this restriction by enabling the full RPM range also in the 6^th gear.

• Possibility for individual cylinder self mapping with the ATX-4C expansion unit for four cylinder engines or ICSM-2C upgrade for twins.

• Boost function for supercharged engines (turbo or mechanically driven superchargers). This feature is only available on request and only for certain engine configurations.

The Motty AFR Tuner can be installed on most naturally aspirated fuel injected motorcycles. The engine can have up to four cylinders, has to be equipped with high impedance injectors, and the design of the exhaust system should route the exhaust gases from all cylinders into an exhaust collector pipe where the wideband lambda sensor can be installed.

These requirement are met by most Japanese or European motorcycles with either the stock or an aftermarket exhaust system with M18x1.5 lambda sensor bung. The Motty AFR Tuner has been successfully installed on different models of Aprilia, Benelli, Ducati, Honda, Kawasaki, Suzuki and Yamaha.

The Motty AFR Tuner is sold with a Plug & Play Harness to interface into the motorcycle's main wiring harness available on most Kawasaki and Suzuki sportbike models today. There will be no need to solder connections into your wiring harness as the supplied harness will have the proper connectors for interfacing with the motorcycle's ECM unit. For other bike makes and models, a generic wiring harness is supplied which requires custom installation to the wiring harness of the vehicle.

Technical support

We provide free technical support to all Motty AFR Tuner customers via email. If you need any help or advice with the installation or configuration of the AFR Tuner, injection mapping or troubleshooting we are here to help you.