How long will installation take? Installation can take as little as 10 minutes on bikes that have the O2 Sensor connector located under the seat. Other bikes may take a little longer if the connector is exposed along the frame or under a fairing. Either way, installation is extremely easy as long as you take the time to trace the O2 Sensor wire back from the exhaust system.
Does installation require any permanent modifications? No. The O2 Manipulator was designed as a “plug and play” device and requires no cutting or splicing of factory wires.
How does the O2 Manipulator work? The O2 Manipulator modifies the O2/Lambda Sensor signal fed to the ECU. The O2 Sensor measures the proportion of oxygen in the exhaust gas. In simple terms, the ECU looks for an average voltage from the O2 Sensor and adjusts fueling as needed to maintain the factory programmed map. Reducing the voltage sent to the ECU lowers the overall average and forces the ECU to add additional fuel. This only occurs during closed loop operation which is typically below 20% throttle openings and below 4,000 RPMs. Above 20% throttle openings and 4,000 RPMs (open loop) is not affected by the O2 Manipulator.
What other changes will I need to make to the motorcycle after installation? A very small percentage of bikes will need an adjustment of the throttle body air bypass screws after installation. The richer mixture created by the O2 Manipulator can sometimes create a surging or sticking idle. Opening the air bypass screws will allow additional oxygen into the richer fuel mixture and stabilize the idle. Do not be alarmed if your idle suddenly sticks between 2,000 – 2,500 RPMs or hunts/surges after installation. A couple of small adjustments between the air bypass screws and O2 Manipulator can have your bike running like it never has before. Additional details are included with the supplied installation instructions.
What should I expect after installation?
Since the ECU uses an overall average from the O2 sensor, you will need to ride the bike for a few miles to allow for the ECU to adapt to the O2 Manipulator. You will not need any special tools or test equipment to confirm if the O2 Manipulator is working. The effects of the device are easily felt during normal operation.
What setting should be used on the O2 Manipulator’s variable trimmer?
Each bike will be slightly different due to any aftermarket modifications to the intake or exhaust system as well as the manufacturer’s tolerances of the various parts (i.e. fuel injectors, O2 sensor) used when the motorcycle was built. The overall goal is to use the leanest setting possible on the O2 Manipulator that reduces or eliminates the lean fueling problems. Too rich can create a “mushy” throttle and waste fuel, too lean will not eliminate lean fueling problems. It’s best to start somewhere in the middle and adjust as needed. You will want to make very small adjustments to the variable trimmer and then ride for a few miles to allow for the ECU to adapt to the new setting.
