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To be fair id just rip it out as its easily bypassed and it wouldnt be the first one to fail.

Do these help?

p0171 is a bad maf 9/10 times. The post cat one will never trigger a p0171 as they are only used for checking if the cat works or not. The coilpack engines use a few different op2 sensors so check the connector if you want to replace them.

I would just grab the premix blue stuff.

Are you using the smaller non nats k11 ecu?

Have you seen this? https://www.micra.org.uk/threads/99-micra-ecu-reprogramming.31599/

Looks good! Although id also replace the rubber brake hose to have it all new and shiny but thats just personal preference.

Yes you can bypass it. Connect the black/white wire to the white/black one. theyre across from eachother

Prolly for the connections to the car like some powers, temp gauge, that kind of stuff

Then you can easily replace the ecu. But you need a non nats cvt ecu. Ideally one that matches the engine (1.0 or 1.3)

Depends if you have nats or not. If you have then you cant just replace the ecu. You might be able to swap the gearbox ecu but it wouldnt be something id suspect to be bad.

I went with a nismo headgasket but id advise the aspect head gasket as they sell one thats 2mm thick. Im using a cga3 bottom end. Not the cg13.

Both ecu's are in the middle of the dash. In front of the shifter

Push the clip in and pull the connector off. Just like almost any other connector..

Only the us one and thats different than the eu one.

Yep normal. As long as it goes away within a few secs and only rattles on idle its fine. Although sometimes it helps to check (and if needed adjust) the valves. Replacing the complete timing chain is a bitch but the top chain tentioner is easily replaced and sometimes helps quite a lot.

https://www.micra.org.uk/threads/definitive-fix-for-a-red-chip-key-nats-k11-micra-cg10or-cg13-engine-with-nats-immobiliser-problems.73824/ And https://www.micra.org.uk/threads/detailed-k11-manual-for-download.55421/

Blue or green. If i remember correctly thats the eccs relay that powers the ecu. The ga16 loom is quite a bitch to fit compared to the micra loom. The micra loom just fits the car and 90% of the connectors engine wise are the same so thats really alot easier to get working. Saves you alot of...

Just use the micra loom and add a few wires and swap around a few pins and use the ga16 ecu (and use a non nats ga16 ecu) The ga16 loom prolly has the eccs relay in the ecu loom and the Micra has it in the car loom. There are some links on this forum to the workshop manuals. (And a post with...

How did you wire it in? What ecu did you use? What loom?