Skunk2 72mm Electronic Throttle Body 2012-2015 Honda Civic SiSkunk2 72mm Electronic Throttle Body The Skunk2 Racing 72mm Electronic Throttle Body (ETB) for the '12 '15 Honda Civic Si and '13 '15 ILX is an easy solution for increasing the airflow your Honda K Series engine needs to make more power. The Skunk2 72mm ETB flows 50% more air than the restrictive 64mm OEM throttle body. The 72mm ETB improves the throttle response and efficiency of both naturally aspirated and boosted engines. Skunk2 ETBs are CNC