fact-
only essential sensors on the TB are the TPS and MAP. There's a coolant line going to the TB, but can be bypassed without problem.
what i've read-
the IM swap is problematic, and not worth it. I wanted to bring up the accordinglydone.com link for you, but apparently the forum isn't loading right now. When the page is back up, search under "faster, faster" 'h23 intake manifold' or 'h23 im'...
what i've read part 2-
The only OBD compatible issue to be addressed is the IACV located on the manifold. The connector on our cars is 3 wire while OBD1 = 2 wire.
what I've experienced-
The H23TB on at ported f23 mani = good times.
what I've planned-
convert IACV when I change over to OBD1 in the distant future... may not even bother if someone wants to buy a chipped p28 running uberdata let me know.