Thread: Any B13 SE-R Nismotronic COP Conversion Writeup?

I know for sure that I need a SR20DET ECU in order to make this happen!!
Also 4 coils (But wish are best for the conversion?)
I think that a power transistor its needed?
Can you still reuse the B13 CAS?
I f someone have done it with good result please take some time to make a good write up
Thanks!!

I don't think a SR20DET ECU is good enough. It needs to be one that was used on an engine with COP to begin with. This means most FWD ECUs are not going to work. You probably want one from a RWD car.

IMO the best coils for the conversion are S15/VET/20V coils along with a 20V valve cover so they bolt down like factory. Honda F20C/F22C and K20 coils are also a popular option but you have to figure out your own mounting solution. Check here for other options: http://www.sr20-forum.com/tuning/26028-cop-coil-plug-pencil-coils-will-fit-fwd-engine.html

No power transistors are needed if you get coils with them built in. The ones mentioned above have them built in. See here for more info: http://www.sr20-forum.com/vvl/39286-do-p12-20v-coil-plugs-have-built-ignition-modules.html

You can still use the B13 CAS.


This How To might also be of help: http://www.sr20-forum.com/naturally-aspirated-all-motor/67011-howto-p10-p11-sr20ve-coil-plug-w-20v-crank-angle-sensor.html

Yeah thats what I meant I forgot to mention the rwd car jeje so with the s15/20v/vet coils no need for power transistor and what about the wiring ?
Does the b13 harness provide all the necesary spots wired?


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Correct, with the S15/20V/VET coils they have the power transistor built in, so you do not need to wire in external ones.

The B13 harness does not have all of the wires you'll need. The B13 harness has one coil power wire, one coil ground, and one ignition signal wire (that goes to the external power transistor). That is enough to run one coil. You will need to tap into the power and ground wires to get 3 more. This can be done easily in the engine bay at the end of those wires.

The last thing you'll need is to add 3 more signal wires from the ECU. This will have to run from the ECU, through the firewall, to the coil harness. The pins on the ECU that these wires go to can be found in the FSM of the ECU, or from AEM's documents on the ECU, or more than likely the NismoTronic guys will also be able to provide you with the pin numbers.