Technical Brief

A fuel tuner is a device that is installed between the engine's fuel injection system and the ECU (Engine Control Unit) to adjust the air/fuel ratio and other engine parameters. It essentially modifies the signals sent to the ECU, allowing the engine to operate more efficiently and produce more power. Fuel tuners are often used for simple modifications, such as changing the exhaust or air intake system.

An ECU flash, on the other hand, involves reprogramming the ATV's ECU directly. This requires specialized software and hardware to access and modify the ECU's programming. ECU flashing allows for much more extensive modifications to the engine's performance, including