The throttle human body can both be enlarged or changed with the aftermarket device to further more improve the airflow. The SiR was made for a 4th gen chassis. It really works terrific using an '89-'ninety one Civic. Nonetheless, attempt Placing this motor inside of a 'ninety two+ Civic and https://jdm-honda-replacement-eng92194.blog5.net/75200411/the-fact-about-b16a2-that-no-one-is-suggesting