Nexus Plug-in ECU - Nissan Skyline R32/R33/R34 GT-R HT-231801

This is a direct replacement for the factory Skyline ECU — it plugs into the OEM harness and mounts in the stock location, so there's no wire-in harness, no pinning, and no cutting into a 30-year-old loom. Covers R32 GTS-T, R32 GT-R, R33 GTS-T, R33 GT-R, and R34 GT-R.

What makes this one worth the money over a universal Nexus is that Haltech kept the OEM integration intact: ATTESA still works off the TPS output, and the R34's MFD injector duty cycle display still reads correctly. That's the thing most standalone swaps on a GT-R quietly break.

The auxiliary connector opens up what Haltech calls OEM Plus — O2 control, flex fuel, oil and fuel pressure monitoring, and drive-by-wire throttle. On the race side you get CO2 boost control, race timer, torque management, launch control, nitrous control, and 128 MB of onboard logging. Wi-Fi built in, so tuning and diagnostics run through NSP or the Haltech Connect app on a phone without a laptop in the passenger seat.

Manual transmission only.

Includes the ECU, air temp and wideband expansion harness with spare pins, air temp sensor (1/8 NPT), mounting hardware for all three chassis, vacuum hose and T-piece, USB cable, and quick start guide.