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Techlusion TFI Electronic Jet Kit (XB 2002-2007)
TFI Electronic Jetkit for EFI Buell with Stealth Technology (includes wire harness). The only way to adjust the fuelling on your Fuel injected Buell motorcycle! The real technology behind the TFI is that it functions like a carburetor. It takes the knowledge and experience that many of us have, and converts it to a fuel injection interface. The interface starts by first understanding what signal the injectors are getting. This signal turns out to be a ground. The Injector always has battery power connected to it. So the ECU just sends a ground to the injector and it opens. This is just like the horn on your car. It has a steady power connected to it, and when you press the button, you are giving the horn it’s ground and it then beeps. Now what the ECU does is give it’s ground to the injectors by pulsing it. So what we did was measure it, by taking a Fluke Meter. A high line version that displays what they call a square wave or duty cycle (priced at just less than 1000 dollars). By connecting it to the negative side, (the wire coming from the ECU to the injector) you will then notice that the injectors at idle are getting a 6-millisecond trigger. At wide-open throttle it receives a 23-millisecond trigger. That is like saying the carb has a 32.5 pilot jet and a 170 main jet. Therefore the trick is to make it work like those jets. The result is an Electronic Jet Kit. Simply figure at what point you are having your trouble, and based on carburetion logic, determine what circuit you would adjust: pilot jet and mixture screw, needle and slide speed, or main. The corresponding pot in our box will change that point in the fuel delivery curve just like a carb would. Fits all fuel injected Buell models up to and including 07 models. Will not fit 2008 models. Should be used with the stock ECM unit.
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