Reason I ask is I have 89 civic DX w/ hondata s200. I'm using an STR 65mm T/B w/ a stock OBD0 TPS.

At WOT I'm only reading 88% on my hondalogger, hence this question?

 

There the same. I would say you need to adjust your TPS on the Throttle body, its prob sitting at negative voltage at closed throttle.

 

At first it was, but then I adjusted it up to 0%. At first it was at -2%. I started the car, turned on my logger, then adjusted it to 0%. Turned off car and restarted, and the reading stayed at 0%.. WOT still = 88%.

I'm going to try to use an si tps instead of my DX one. I am supposed to able to use the DX one as well, but just have to switch two of the wires for it to read correctly. On the DX motor, the tps is backwards with the dual point injection. This is my understanding at least. It's been a while since I wired the car.