Quote:
Originally Posted by EsChassisLove
My hand was an inch in front of the tube. Not completely blocking it.
Suction is suction. If it didn't work, then it wouldn't be hooked up like that.
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naw man, you got to check the physics. Suction is not suction lol. think of an engine running without a turbocharger. Before the throttle body, there is suction right? Because the engine is breathing. But there is no VACUUM. The engine is pulling air molecules into its intake manifold- past the throttle body, yet before any actual vacuum can be built the air molecules are replaced by the atmosphere.
The same thing happens to the inlet of a turbocharger. The air filter defeats any actual attempt at building a vacuum. You get a SLIGHT pressure drop- but Its got to be less than 2" of vacuum. No ones actually measured it right? So we are guessing until I do an experiment.
The factory uses it because its the ONLY place to get ANY vacuum at all anywhere on a turbocharged engine in boost. Notice the inlet tube is small, the hose is small, the whole thing is lengthy. This would help acquire a slight vacuum during boost, when compared to the atmosphere.
whats funny is, you could always install a more restrictive air filter to get more of a vacuum in the tube during boost. It would hurt power output but improve PCV during boost.