I've read that Si means 'Sports Injected', or something like that, but now I'm curious to know what CX, DX, and whatever other model means. Also, for the integra models, what does GS-R and LS mean?

I've tried searching, but its pretty hard to find because the model names are too short to be included.

 

They dont really mean anything, besides Si. The R on the end of things usually means racing or race. But DX, EX, LX, CX, HX, GS, RS, LS dont really have a specific designation. They could mean something minor, but not a whole lot.

LX could mean luxury since its all power, but then the EX has a sunroof, so go figure.