Page 1 - My 240sx fastback
Page 2 - The Shell
Page 3 - The Engine
Page 4 - The swap
Page 5 - Electrical (you are here)
Page 6 - Tips & Part numbers
Page 7 - VIDEOS
Wiring & electricals;
-you can change the RB's speed cable unit on the tranny for the original 240 speed sending unit, i cant remember if the gears are the same, but they are interchangeable.
-Charging system is the same, the 240's charging system will hook right up to the RB's alternator.
-Bigger fuel pump is needed without a doubt, Walbro 255l/h is usually the best way to go, some may recommend changing the wiring to bigger gauge from relay to fuel pump assembly unit, although I did not do that. I run a Walbro 255lph fuel pump, I also run 3/8" line from back to front

Fuel pump wiring diagram

The injectors, they were sold to me as 440s some tells me they might be 550s

Autometer boost gauge

Autometer 5'' tach

SDS engine management
time to replace the old stock EFI system on the left with a new, more efficient and versatile engine management system on the right

left is with stock system, right with the SDS system


overview of all the components

the new ecu

The controls

Coil packs (GM type)

Map sensor, 3 Bar capacity (GM type)

Engine temperature sensor (GM type)

Intake air temperature sensor (GM type)

Cranck angle sensor (SDS custom)

injector resistor pack (SDS custom) made for low impedance 444cc GTR injectors

I'm running a Turbosmart manual boost controller, simple and reliable, everytime

Innovate motorsport wideband kit
recorder

the sensor

The back bone of it all, a Painless 12 circuit ATO fuse block

Page 1 - My 240sx fastback
Page 2 - The Shell
Page 3 - The Engine
Page 4 - The swap
Page 5 - Electrical (you are here)
Page 6 - Tips & Part numbers
Page 7 - VIDEOS