How I keep oil out of my intake aka ProVent 100 (pics n stuff)

[J.Belknap]

Ok so I guess I should preface this with a disclaimer that my CCV system is a little different than a normal M62 motor.

The Dinan SC kit has a cnc milled intake manifold back plate that is tapped for just the brake booster & vac lines. The oem intake manifold mounted PCV goes away. An external pcv from a BMW 318ti is used.

If you want to see how my CCV routing works, diagrams from Dinan are in this thread.

The oem oil air separator was not enough for my needs, so I installed a Mann-Hummel ProVent 100. It is filtered with a coalescing media. It is located downstream of the oem oil air separator outlet but before the 318ti pcv inlet. The ProVent 100 drains to the smaller of the two OEM oil sump drain pipes. It is mounted less than 45 degrees from level for good draining, and uses as short of a route as possible to prevent crankcase gasses from condensation in the lines.

I don't have before/after oil consumption info as my rear main seal needs replacing and that would skew the data.

I have put about 2000 miles on the X5 since installation. I have gained 10% mpg and a notable little bump in power. Less oil and more oxygen going into the motor is always a great thing.

Anyhow, on to the pics. You can see that the oem oil separator is in place and the ProVent adds a second round of separation. Unfortunately, I have to do a lot of adapting to different sizes, hence all the hose clamps. Please excuse the sorta dusty engine bay.