Intercepting engine diagnostics

I'm trying to read all the signals coming off my project R6 (2001) signals include (speed, throttle position, oil temp, engine temp ,etc) . I'm unsure of where to start or how to go about this. are the sensors on the bike analog so i can just splice the wire and that won affect the real ECU readings, do i need to go down the speeduino forums and build my own ECU to do this. any tips would be awesome

Please list the test equipment you have so that you can discover some answers to your questions.

Warning! you can damage the vehicle if you put the wrong code on the bus. When you connect initially disable the transmitter on your CAN interface.