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HKS is claimed higher quality by some because it's an elite BOV. It can hold above 40PSI, where Apexi is rated at 29PSI. So unless your going for 800rwhp, then Apexi at $300 for the kit is what most have. Blitz on top and center middle, HKS middle sides, Apexi on the left bottom and one far right, Greddy in the middle bottom. 
 STAGE V++++ Going to XV+ and beyond :) Yellow Z STAGE II Going to XI+ |
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