MS2 in a 2001 NB 1.6
 

Can I use the MS2 in 2001+ 1.6L MX-5?

Yes.

It will be difficult, and require much more research and effort on your part than is typical, as the wiring of the Euro-spec NBs differ somewhat from the North America-spec cars for which most of the wiring documentation and tutorials are written. You'll need a factory service manual and wiring diagram specific to your car, which none of us over on the west side of the Atlantic have access to.

But yes, from a purely technical standpoint, an MS2 can be installed in any MX5 from 1990 to 2005.

^ What he said
Frank [WestfieldMX5] had a pin-out diagram for Euro-spec NB1 Miata posted on his, now seemingly defunct, web page. It wasn't much different from the US-spec. I believe there was some issues with fuel-pump and maybe clutch interlock. I stumbled across NB2 info for Euro-Spec when doing a rusefi install. So the information is out there. And, since I was able to find it, can't be that hard to find.

Fuel pump is on 3P on cars with immobilizer and on 3N on cars without immobilizer.
Clutch switch is on 1V, as is neutral switch (they're parallel).
Everything else is the same as the US cars.

Website is indeed gone, been putting a couple of things back on westfieldmx5.wordpress.com, but not much there yet. Certainly no wiring diagrams.

Nice, thanks guys, wiring is not of any concern to me but I was mostly wandering about the trigger pattern of the nb2 cars and ms2. I remember it has a 99-00 option for wheel pattern so i was a bit sceptical for the later years if they made any changes to crank and cam patterns.