I have a flapper delete fitting that goes to a catch can which has had the stone filter removed so it is more like a free flowing drip can. The high side really doesn't emit much except for drips anyway so I felt this served the purpose as well as relieved any restriction. This allows me to run pretty AN lines. I then run the flapper after the 'drip can' which allows me to eliminate that crappy plastic clip that always breaks, and instead just run 3/4" heater hose that slips right on.
From here, yes I will likely route it to the intake pipe, but I do NOT believe this provides any measurable amount of vacuum, neither does the stock configuration. It sucks away the fumes, that is all I consider it doing. I'm not saying the engine doesn't require vacuum, any setup is not ideal without a vacuum pump from what I can tell. Particularly high powered vehicles, as they also have problems with smoking. Although the PCV delete systems are 'free flowing' they still can't evacuate the crank case fast enough and in some cases will still build up positive crank case pressures. These setups should breath more since they have two vents, but would still benefit from vacuum.
Andy is releasing a mechanical vacuum pump soon which hooks on between the OE vacuum pump and HPFP. I don't think there is a way to make this work properly with a PCV system, is there? Because when at idle, vacuum will be pulling on the high side. There would need to be some sort of controller or bypass perhaps.
Also, with exhaust scavenge setups, you need a check valve to prevent backfires from pressurizing your motor, with a check valve you're also restricting the engine once again so that it cannot breath at idle.
