Is my pressure sensor bad?

On my stock carb I have a bit of a rough idle. Anyway, I was tinkering with it today and I just started disconnecting sensors,hoses, etc. and the pressure sensor on the passenger side, all the way to the rear (just wire plug goes into it) was disconnected and I have a much better idle and it seems to be doing a lot better when revving up the engine. Is this limp mode or am I just crazy? I drove it around and it just seems like it is running better with it disconnected. No check engine light...yet.