I was looking at a chip from pcmforless for my 93'. Would it do much for a relatively stock car. I do have a cai, catback, and will have a set of 3.73's relatively soon.

 

Most tuners will guarantee some HP gain, even on a stock car. If you talk to them about what you want, they can likely tell you more.

 

They claim about 10hp from a relatively stock car with a "power tune". It requres the use of premium fuel, so I imagine the power increase primarily comes from advanced ignition timing. They also pick up some power by turning the fans on earlier, allowing you to use a 160 thermostat.