Well its a track only car. Also the whole cover isnt off. It is cut where the head bolts to the block.

Also i wasnt saying that my setup is better than using a pump to vacuum the crankcase. However i do fully believe it is sufficient for me, as well as most other. Even at 27 psi pushing close to 400whp through my engine i have never had my dipstick pop open or any problems with my rear main or valve cover leaking.

As far as the exhaust method. I think it would work if you were not running a muffler. The dyno shop i go to has a grand national. They said that with a muffler on the exhaust it created to much pressure in the exhaust in combination with the turbo slowing down the exhaust gas(which would reduce the Bernoulli's affect) to work. In fact they said that with a muffler it actually would blow exhaust into the crankcase.