View Single Post
      04-28-2008, 01:01 PM   #19
kitw
Colonel
kitw's Avatar
96
Rep
2,723
Posts

Drives: 2011 E92 Jet Black M3 (#6!)
Join Date: Jun 2007
Location: Bay Area, CA

iTrader: (15)

Take a look at the stock intake box. When air flows up through the filter and then across that barrier, and down to the intake horns, the cross section gets pretty small. That is going to be the largest restriction.

I just ordered some ITG cone filters, with an integrated velocity stack, that slip into the stock air intake tubes. I'll keep y'all updated when I receive them in a week or two.