I was told this is the ms3 with the msx expansion. I took pics of it. This would be like a plug n play? just have to wire in harness.

Now i only ave the plug in harness for the bottom plug in the first picture. do i need to get he top one as well?

 

Yes you will need the top one too. You can pick them up at most electronic part stores. Or order one from diy autotune with wires all ready cripped and ready to go.

 

Ahh i see. the one from diyautotune is labeled though so i might pic that up. Is wiring this up going to be different that the previous ms units?

 

It will be a little different. Since you will be using the msx card for your injectors and spark outputs. DIY as a write up on there website for the rx7.

 

I would also not say it's "plug and play."

You're going to have to wire it properly and tune for your engine.

Ken