from ah choy...then it's for silvertop AFM wiring. yeap, tested this ECU in track and street before... very very responsive. can beat stock blktop...if both from same car chassis lar. whoever driving silvertop looking for performace upgrade tat u can feel.. this ECU is a good buy. no need to spend so much on aftermarket extractor or cam pulley or those sort.. levin20v : yeap.. i also haven seen one for blktop before. last time corollagtouring sold one..it was snatched within the same day he posted it. good luck on ur sale. very attractive price.