In the past I have made setups like on the green car pictured and noticed major improvements in high end power, and with eliminating oil coming out of the engine and into the intake.
I think the tube before the maf would create more suction but I am not trying to create a huge vacume in the crank case, just eliminate any positive pressure.
I also did not want to fabricate a complex maf adapter/pipe before the maf as most people would not want to do that.
I have in the past had breathers mounted after the maf like the stock setup. On a stock engine, or a engine with rings that actually seal (unlike kens lol) it is not a problem. But on a built engine that has blow by at excessive boost levels it made the engine run like shit.
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