I met one of the managers, John Lambert, at Corvet...

I met one of the managers, John Lambert, at Corvettes at Carlisle and bought some products from him. Very professional, very knowledgeable and always available to help. The hypertech customer service/technician folks at their main office weren't so great. I left several messages over a period of a few days, and they didn't call me back. I had to keep calling to get someone. However, their advice and technical guidance was very good. And, the hypertech tuner I purchased was good quality and did exactly what they said it would do. There was definitely a significant difference with torque at the lower rpm range.