Jog / Dio 50cc stock pipe = 4° to 6° Jog / Dio 70 to 90 stock pipe = 3° to 4° Jog 90 race pipe = 7° Jog / Dio 70 race pipe ,very high rpm = 6° to 8.5° ===================================================== 自動進角??大小不就跟原廠50CDI一模模一樣樣,我記得有進角的CDI體積都會比較大才是 找個假日再來給它弄上去看看。