How do you know it runs rich? Do you have a WB? The 94-95's are load-based and the factory tune leaves a lot on the table. As for what method to use, it depends upon the owner. If you are not going to make a lot of changes to the car and are not into spending some time learning to use an RT, a chip can be a good way to go. If you plan on making changes and like to tinker, tuning yourself is a viable option. Figure on needing an RT, WB and laptop at a minimum. Good luck.