I had this manifold in garage for a while and I decided to hug out the VICS chamber and delete the VTCS flaps. I followed jdmsam's instruction
http://www.mazdas247.com/forum/showthread.php?t=123744816 to remove the VICS chamber completely to maximize the flow, and it will yell more gain than simply remove VICS flaps.
Asking 150$ + shipping OBO
http://www.mazdas247.com/forum/showthread.php?t=123744816 to remove the VICS chamber completely to maximize the flow, and it will yell more gain than simply remove VICS flaps.



Asking 150$ + shipping OBO