I know its an old thread but i just thought i would post my impressions on Carboy. A couple of years ago i stopped by to see if there were any fmic and exhausts kits available. They had no idea which was understandable due to the fact they mainly deal with honda/acura. Also, the guy claimed that he had seen a stock msp dyno at 120whp... A year later my friend and i went back. He wanted to turbo his gsr and the employees at carboy kept claiming the greddy kit was the only way to go and they were extremely unhelpful. Today i dynoed my car at carboys becuase it was the closest dyno to me. The employees had nothing but negative comments about the msp. They insisted that it is nearly impossible to gain any hp and it should be left alone. They claimed that one of the original msp's from a dealership was put on their dyno and they were unable to tune it (which is believable bc they were probably using a greddy ems that doesnt work with the protege ecu). Also, they claimed that mazda still has about 1000 msp's in the warehouse becuase they cannot find anyone to buy them. As I was leaving the shop, i noticed an evo with its engine pulled. The engine and other parts were laying out getting soaked from the rain. I cant possibly understand why anyone would highly recommend carboys from my past 3 experiences.