Where do i start???
 

My 1st step into the Rotary scene is my new toy ...an '88 RX-7 Black 5 speed .power sunroof,all the power options i bought off the original owner. No rear seat and a rear wiper so im guessing its a GXL. Its all stock but want to get a lil quicker ad better gas mileage but i dont know where to start..... dont know how to post pics....... :?:

You start by giving it a full tuneup. I mean FULL, get everything back to spec, by then you should have read enough to know what goes on your car next.

After you've done what AusT has pointed out, you can go with intake and exhaust...

Anything more to gain hp with N/A will be TB mod... After that, you'll have to come up with lots of $$$ and lots of time.