please help
 

hi i finally was able to get a 93 mazda rx7r1 with 53,000 miles on it,so far its running amazeing.The only thing that seems wrong is when its at idle.Its at its normal idle at 800 but when i start revving the engine it will rev up but when it goes down it goes below 800 for a little bit and almost feels like its gonna stall and then go back to 800 and be normal.is this something i should worry about?Please respond because i just spent 14,000 on it.thanks

*EDIT* Sorry... I was being an asshole. I'll see what I can dig up. :)

If it idles at all, you're doing good in my book.

hmmm....bad idle, I would get it checked out if I were you.

Check your TPS voltages to make sure they're in spec.

Change the spark plugs,fuel filter(if you can afford it),check the condition of the air filter/s. If dirty replce or clean as needed. These small things can affect idle quite a bit. ( plus it's something you can do,...plugs are easy at least....and relativly cheap.) It may be a clogged cat. But try the plugs and stuff first. Good luck!!

Might be your grounding. Make sure your grounding connections are clean.