Use the search button NOOB. I had 2 threads on it just this week, plus I've written about it a few times in the past:

https://www.miataturbo.net/forums/sh...&highlight=tps
https://www.miataturbo.net/forums/sh...&highlight=tps

You said you have a 91? Get a vari TPS. I assure you, it a large, Large, LARGE improvement. I mean LARGE.

I think the engine I bought was out of an automatic, there's a plug on the throttle body with four connectors in it. Score?

yep. auto TPS.

Not that It matters, I have a 1.8 Manual.

But are the auto cams different from the manuals in the 1.6 (aka less power)? Something I remember reading a while back.

not, just the piston have less CR. so you can be a bit more aggresive with boost/spark I believe 9.0:1 vs. 9.4:1