Aarons1k, you should definitely check out SpeedInc. if you're not too far from Schaumburg. They are a great shop and dyno tune your car to perform at its best and have been around for a while now plus have a good dyno tuning system in their shop. People come from all over to get their cars tuned there. I agree PDQ GTO with the dyno tuning over a handheld programmer, you get way better results and you will know exactly were your car stands with regards to performance and settings for your cooling system to kick in. They focus on Vettes, GTOs, F-bodies, and other American sports cars. My definite recommendation and they would definitely would have the answers you need.
Speed Inc
803C Albion Ave
Schaumburg, IL 60193
847-891-0767
Speed Inc - Parts Warehouse - FREE SHIPPING
