i live in the philadelphia south jersey area and wanted to know of any shops who could dyno and tune my car. my pcm was tuned by MADZ28 during the engine rebuild: bored .030 over, LE2 head and cam package,58tb, long tube headers,36lbs injectors,m6 trans--------engine runs strong, but i've noticed the engine pinging under load. i run 94 octane, good ignition(plugs and wires). is additional tuning needed? i did a search and found some knock module problems....i sent a message to madz28 to see if the knock module is replaced during the tune, he has not returned my message yet. any ideas and information would be much appreciated....thanks!