Here is some basic info I have obtained.

This is some *S14* KA24DE info that might be handy to someone doing a swap.


These are things you can remove from the engine and wiring harness and still have the car function perfectly:

• Secondary (post cat) O2 sensor
• Crank angle sensor (located on transmission bell housing -S14 models)
• Intake air temp sensor (usually located in intake tube or air box, this is not used for operating the engine)
• Complete EGR system and associated sensors
• All transmission sensor/switches (except reverse switch, if you want your lights to work)
• All emissions control sensors and actuators

Here is the bare minimum for running the engine:

• Throttle position sensor
• Water temp sensor
• Knock sensor
• MAF sensor
• Injectors
• Distributor/coil
• Primary oxygen sensor
• Idle control motor
• Fast idle valve

This has all been verified on a couple S14 KA swaps I have found on the net. Keep in mind that you may want to keep the emissions equipment and sensors in order to skate through your regional smog testing, unless your area doesn't test.

On my engine I have many of these items still in place (I think the intake temp sensor is absent but otherwise everything else is there), but based on this information, you should be fine if you follow these guidelines.

ive got an s14 pinout diagram here, it really helped me out with my swap. what you need to do is provide 12v to these wires:

- #1 provides main power to the coil and injectors (this should be wired to the key 'ON' position)
- #17 provides main ECU power (should also be wired to 'ON' position)
- #34 this injects more fuel for easier startup (this should be wired to the 'START' position) (its possible to start the car without this but, requires tapping of the throttle, etc..)

AND THATS IT! just 3 wires and your car will start up

If I can add to this, my car run fine and without any idle control. I just simply use the throttle body adjustment screw to adjust my idle.