only 3 possibilities - problem in the wiring - bad TPS (doubtful) or TPS not adjusted correctly - was this a DPFI to MPFI swap? if so, were the yellow and green wires swapped? have you checked voltage on the TPS? have you tried a different throttle body with TPS that hasn't been screwed with?

by the way, most common symptom for bad TPS is that it won't rev up - black smoke and smells rich are symptoms of faulty fuel pressure regulator or MAP sensor, not TPS - 90% of JDM engines that we get have a bad fuel pressure regulator - they seem to quit working after sitting for a long time and won't return unused fuel to the tank

the common problem with code 7 is not with the TPS, but is usually caused by installation and/or wiring by someone that doesn't know what they are doing - we have done over 60 swaps of all kinds of engines, ZC, B16, B18, H22, etc. in all models of Hondas and Acuras and we have never started one up and had code 7 - have had a lot of B16s with code 4 or 8 (they all seem to have bad distributors) - we have fixed a lot of them that other people did the swap on that had all kinds of codes, usually traceable to the wiring and wrong connectors plugged into sensors or sensors not connected at all