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Title: Pretty Good
Review: I bought the hypertech 30027 after adding a slp cold air intake and performance catback exhaust system to a 1997 Trans Am. I also replaced the stock GM 180 degree thermostat with a hypertech 180 degree thermostat. These upgrades were done before purchasing the hypertech unit. The car would run hot around 210 degrees in the late afternoon in hot Texas weather even after replacing the thermostat with the hypertech 180 thermostat. After installing the catback system the car felt a little sluggish upon initial acceleration (slow to respond). After connecting the hypertech unit and downloading the tune the car holds steady at 180 degrees and the sluggishness that I felt after initial acceleration is gone. Not sure if the car added any additional horespower but it definitely is running better. I was apphrensive about buying this at first but after using it I would recommend it.
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