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      06-05-2009, 03:03 PM   #27
Bong rips all fucken day.
USCRooЯ's Avatar

Drives: 335i
Join Date: Feb 2009
Location: SoCal.

iTrader: (1)

Originally Posted by Zeph View Post
I won't buy them just because they call them 3" DP's. Not big on liars. More importantly, I don't see how going from 2.5 - 3 - 2.5 can increase flow or decrease back-pressure. Actually to me it only seems worse to expand and compress the air again. They should just be 2.5" all the way for the best possible flow.

If this were N/A car then the 3" center pocket can be useful for exhaust scavenging, but this is a turbo application which makes that not applicable.

it goes from 3inch to 2.75 to 2.5 instead of other DPs that go from 3 directly to 2.5.

thats the difference in design, i assume the longer transition and gradual decrease instead of an abrupt one is the difference.
335i sedan... awesome.

(matte black grills, painted reflectors, light bulb changes, and emblems are NOT MODS)