TwinTurbo.NET: Nissan 300ZX forum - As far as I understand it....
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Subject As far as I understand it....
     
Posted by Multi_Read (MO) on January 05, 2009 at 11:17 AM
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In Reply To BOV Debate...looking for some opinions on using posted by REDI4U on January 05, 2009 at 08:32 AM
     
Message our Z's have recirculation valves and they are there for a purpose. The ecu measures air intake and puts the right amount of fuel into the system for the given amount of air. When you use blow off valves, they release air that has been measured by the ecu, and then more fuel is put into the engine assuming the air is making it in. If the throttle is closed suddenly, the pressurized air is recirculated back into the intake. (I think)

I'm not perfect at explaining it, but I think I've got the gist of it. Boring answer shortened, if you want the sound of a bov, then buy the hks's mentioned by Fake_Blood, but also purchase the recirculation kit for those bov's that make them recirculate the pressurized air. This way the ecu doesn't over compensate fuel, which is wasted otherwise.

Personally, unless you've modified the hell out of your car, I don't see a purpose for them... or if your stock recircs are bad.

     
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