CCV mod good for intake valves?

lightning95

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Hi guys I troll a lot on here cause of the mass amounts of info so I don't have many post.

Anyways I read in Hot Rod mag that GM engineers made an oil seporator for the new Supercharged Corvette motor. They said they were having problems sucking oil into the intake under boost and under long term test getting oil build up on the back of the intake valves. They stated that this is a common problem with Direct Injection motors where there isn't any fuel in the intake to wash the back of the valves.

So my question to the guys that have pulled our motors apart is there a build up on the intake valves?
 

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