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This will do two things: 1) You wont have to worry about the PCV system dumping loads of oil into the intake when making hard right hand turns. Oil will accumulate at the back left of the driver's cylinder head where the two PCV ports are at and when modulating the throttle through a hard right hand turn it will allow oil to be sucked into the PCV hoses and right into the intake manifold. This is why Z's smoke like $2 whores when cornering hard right at track speeds and modulating the throttle. In addition, oil making its way into the combustion chamber will effectively lower the octane rating of your fuel and will very likely cause detonation. It isn't lowering the fuel octane per-se, but the auto-ignition point of oil is much lower than gasoline and since it is mixed in with all the fuel/air within the cylinder, as soon as it reaches its autoignition temperature, it will combust and the gasoline will as well. and... PCV system, whos effect is by way of the suction created by the turbo compressor, you will not be sucking oil and oil vapor into the induction system. If you have ever inspected the inner walls of your boost pipes, intercoolers, or throttlebodies, you will note a film of oil within all of them. This also is what creates the deposits seen at the throttlebody/throttle plate.
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