Gealii- Yeah I guess that is true. I could always remove them. But, it might be worth it to keep it and drive it until it's toast rather than reverse the mods.
UltArc- There are really endless things you can do, within the law of course.
This is really what I'm after I think with that Sentra in the garage. It's identical I think, with the 2.0 5 speed and everything. I sent some pictures to my dad and now he seems suddenly interested in fixing the fuel delivery issue. I have tried to learn and help, but he's stumped too. The fuel pump is not getting any power and we cannot figure out what the problem is. Other than that, he just rebuilt the Transmission and it's been sitting for ten years with only 120k on it. Practically rust free too.