What's the function of the Venturi Tube on a Tiptronic?

[NewArt]

Good question! I replaced mine since it was old and brittle and kept breaking. (Sound familiar?) I hadn't realized it was only in the tip. I know it is part # 96611017000 and costs just over $100. I understand the venturi principle. I too would like to know what a hundred plus dollar plastic tube, that I had to replace, does in my car!

[78F350]

I know that the front connector is the vacuum line for the brake booster. Not sure why the tips take that from the aft side of the engine. I forget what the other end connects to. (Drove a Del Sol today and no Boxsters in sight.)
Maint to do? Swapping in a used 2.7

[NewArt]

Originally Posted by 78F350

I know that the front connector is the vacuum line for the brake booster. Not sure why the tips take that from the aft side of the engine. I forget what the other end connects to. (Drove a Del Sol today and no Boxsters in sight.)
Maint to do? Swapping in a used 2.7

Yes, when I dropped my engine last year, I remember reading in my Bentleys that I needed to "remove brake booster vacuum line", which was at the front of the left intake manifold. Except it wasn't.

[KRAM36]

Originally Posted by NewArt

Good question! I replaced mine since it was old and brittle and kept breaking. (Sound familiar?) I hadn't realized it was only in the tip. I know it is part # 96611017000 and costs just over $100. I understand the venturi principle. I too would like to know what a hundred plus dollar plastic tube, that I had to replace, does in my car!

Yes mine broke too as I pulled it from the connection to the intake pipe. Luckily I found one on eBay for $75 shipped, even came with the intake pipe. This one is much more flexible at the Y connection.