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Mazda Protege Intake Port & Polish

In part II of EP. 5, the manifold is ported & polished. The stepped casting is removed which will allow smoother airflow. This means more power and faster acceleration. I also show a method for closing the holes left behind when removing the VTCS shaft. I don't recommend it but it has been done with success by many Protege owners with no reported problems. The holes can be left open also.....all but two. The left an right outer two MUST be closed or a large vacuum leak will occur. Any questions? Comments? Post em and if you like the vids, like and subscribe to my channel. Thanks for watching!