With the final design of our 3D-printed ECU bracket complete, we printed it out of polycarbonate and were ready to go.
We bolted the Motec M150 to our new printed bracket and then installed it using the factory ECU mounting points. The original throttle pedal cable is laying on top of the ECU and will soon be removed from the car.
Next to the Motec M150 is the ECU Master PMU16 which we covered in Part 17 that replaces the factory main relay, and fan control module, and then directly powers the radiator fan, fuel pump, and many other devices.
A custom pigtail harness from the Zelaya Brothers, based in North Carolina, connects the M150 ECU to the original chassis harness (yellow connector). Additionally, this harness has multiple connectors and pigtails that run to the front and rear bulkheads for sensors, as well as the ECU Master PMU-16 to control and log the channels on the PMU. The throttle cable has been removed from the car in this photo.
The factory VTEC connector (right) use to plug into the side of the factory ECU (left).
Our new ECU harness uses a factory plug to connect the M150 to the chassis harness to control VTEC on our engine.
4 comments
Another Billy cutting-edge NSX project! DBW opens up tons of interesting control possibilities!
The mid to late 90s in between/early years of DBW had so many weird contraptions. I would love to hear about why certain decisions were made for so many parts on cars!
i was thinking the same thing as he was going over the new DBW pedal.
Excited to see this paired with the ECU Master PMU16! Modern brushless fans and pumps are awesome, both in low power consumption and control capabilities. Let me know if you want another set of eyes on your turbo plans.