Here's the bike....
I'm using a Bowling & Grippo Microsquirt ECU in a Fuel Injection system of my own creation:
....includes:
2008 European-Spec EX-250 throttle body and injectors
2008 Kawasaki Ninja 650 Throttle cables (pull and return)
Bowling & Grippo MicroSquirt EFI controller (ECU, fully user-programable)
Suzuki LT-R450 Quadracer fuel pump along with an LT-R450 fuel pressure regulator (42 PSI system pressure)
Area P 2-into-1 full exhaust system with "long quiet" stainless steel muffler
Innovate Motorsports LC-1 Wideband Oxygen Sensor controller
Bosch 5-wire wideband oxygen sensor
A standalone Air/Fuel ratio readout gauge mounted just below the instrument cluster
Fram Fuel Filters (one just past the petcock, and a high pressure cannister type)
General Motors Corporation Intake-Air and Coolant temperature sensors
Motorola MPX4250A Manifold Absolute Pressure sensor
Nissan Altima EGR solinoid (used for "Fast Idle" cold-start air circuit, replaces the "choke")
K&N R-0990 air Filter
and... miles and miles of new wiring.
I've got the Microsquirt mounted up in the back end of the bike's tail, just in front of the brake light housing. In the pictures you can see the Microsquirt's serial-port connector for my laptop computer sticking out from under the back end of the seat.
