Analisis penggunaan venturi mixer 16 lubang menyilang terhadap perubahan performa dan emisi pada sepeda motor 4 langkah 125/CC dengan penambahan LPG propana 4,58% dan butana 83,14% = Analysis usage of 16 crossing-holes venturi mixer to improvements in performance and emissions of 4 stroke/125 cc motorbike by the addition of LPG (propane 4,58% and butane 83,14%)