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JimmyMac · 10-11-2012, 12:21 AM

I would run 2 check valves if you are worried about losing vacuum. The one on the block, and one near the end of the hose. But I'd just run my Saikou Michi OCC. Designed right and 1/3 the cost of these new to market OCC's.

10-11-2012, 12:21 AM	#18
JimmyMac Senior Member Join Date: Aug 2012 Drives: 2013 FR-S, 2016 Miata Club Location: NC Posts: 785 Thanks: 183 Thanked 258 Times in 171 Posts Mentioned: 7 Post(s)	I would run 2 check valves if you are worried about losing vacuum. The one on the block, and one near the end of the hose. But I'd just run my Saikou Michi OCC. Designed right and 1/3 the cost of these new to market OCC's.