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Old 01-28-2012, 02:51 PM   #21
forcedfocus
Focus Enthusiast
 
Join Date: Jan 2010
Fan#: 72073
Location: Farmville, NC
What I Drive: 2004 silver zx3

Posts: 280
FF Reputation: 4 forcedfocus Good Standing Member
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you need valve springs or that built bottom end will do you little good. When you start turning up the boost it will actually start to push the valves open. So you need them even if you dont swap cams or plan on turning more rpms.
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