Hi my boy is going to take his 88 turbo supra to RX Performance sometime this week to get a diagnostic done to it. the head is tapping and there going to check it out. I would like people's personal EXPERIENCE of the shop and the work done. I would perfer to hear actual stories and not someones personal vendetta to the shop. so please no bashing of the shop unless you have a reason to! Also any recommendations to any other performance shops. With XAT and DC out of the picture i know theres not much left out there. thank you for your time.