Rob,
This picture was posted in a thread on MBWorld about your Manifolds:

SLRTypeIntercoolers.jpg


These were made for an E55, and they're designed from the IC's used for the SLR. I guess these produce a significant HP increase on a modded car. I'm talking 35 to 40HP alone. Suppossedly this is the biggest restriction on our engines. Have you looked into this? What are your thoughts?

Here's the original thread:

http://www.mbworld.org/forums/w211-a...manifolds.html

Thanks,
Joe