The "TOP Fuel Injection" adjustable fuel injection tuner is a load-based fuel injection module that does not require any splicing of your wire harness or making other permanent modifications to your bike. The "TOP Fuel Injection" comes pre-loaded with base maps for every particular model which than can be fine-tuned for your bike and individual riding style with three buttons. Tuning your fuel injection this way is even easier than tuning a carburetor. You don't need a computer nor a dyno to maximize your bike's performance. Utilizing the latest in load-based technology in fuel injection performance, the "TOP Fuel Injection" detects the exact amount of load on the engine at any speed and any RPM, delivering the perfect amount of fuel to the engine for optimum performance. This makes the design superior over fuel injection modules that work off of throttle position, as throttle positions can be the same at different speeds and with different loads on the engine. With the same amount of fuel injected into the engine in varying conditions, performance will never be as good as it will be when you have installed the Zodiac "TOP Fuel Injection" tuner. Great on stock bikes but strongly recommended for use on bikes with performance air cleaner and/or performance exhaust installed. Available for all injection models.