How do you like that? Riveted-on TPS sensors. That seriously pissed me off last spring when I bought my hatch. When I was swapping it, I noticed the DX one was the same riveted-on BS. You can break the old TPS off (if you're in a hurry), pull the rivets with pliers, drill and tap the holes for standard screws, and fit an aftermarket TPS on it... but how fun is that? They're soft aluminum. They're not easily rebuildable. They're pretty disposable.

I thought it was funny that I found a .pdf outlining the Honda TPS adjustment process. They're not adjustable from the factory, but doing what's listed above would make it adjustable.

I've seen throttle bodies on eBay for $25. That's how I fixed my broken TPS. That might be your best bet for now. You want to take your time and do some reading about what's needed to pull it off if you're going to hack the one you've got. I could dig up that .pdf... I saved it. It's just the specs for getting it in range with a multimeter so your car will idle properly once it's on there.