His dizzy only has two wires coming out but has the cas in it, shouldn't it have four wires? And no dizzy cap and rotor so I'm guessing it was set up with individual coils. It may fit a cap and rotor on it though. Not sure

I believe it needs mods to work in an A-series. One is for sale at FS - Sr20 crank angle sensor to suit a12

I checked out a gtir pulsar today which is an sr20det and was a d4p dizzy but the internals were a bit different to the e15 ones. Would an sr20/det dizzy work, or only e15?

In the EXA turbo. In N12 with E16 engine.
The E-series D4P fits in the Datsun 1200 engine block. There are many D4P like Honda, but they don't fit the A-series.

So is that the dp4 dizzy? What model cars do I find it in? Only turbo, or any sr20?

You can try it. If it is batch feed injection, it may work. But I think it needs the CAS sensor for signal input to activate the fuel pump.

This Nissan Optical CAS fits right in the A-series block. Swap the Mitsu optical wheel as it has a different pattern.

I'm using the original ecu out of the mitsi. Can I run the mitsi ecu without the cas unit?? This is the last thing I have become stuck on so would love clarification. I figured the ecu would need it to know injector timing??

To do EFI, no need for a crank trigger or CAS trigger with most ECUs. EFI will work with a standard distributor with ECUs from Haltech, Wolf, Megasquirt, etc. You can have full control over the spark curve, especially if you are turboing the engine, you can do spark retard etc. If you wire your distributor mechanical advance weights, it locks the distributor (no advance) then the ECU can control the advance.

The reason new engines use a hall-effect or VR sensor or CAS sensor is because it is less expensive than a distributor.

MegaJolt is an extra expense as most ECUs which can already do spark control.

Surge tank is used when the fuel tan is not sufficiently baffled. The 1200 tank has partial baffling, but perhaps if you run the tank low it could uncover the pickup tube on cornering. A carburetor has a built in anti-surge tank (the float bowl) but EFI will stop if the flow stops for a moment. Some guys have successfully run EFI with no surge tank, I'd suggest keeping the tank at least 1/4 full at all times.

Hey zdog I'm planning on using a trigger wheel and coil pack and letting my ecu manage the spark or a cheaper way would be a megajolt jr and same trigger wheel setup