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      09-18-2012, 12:42 AM   #9
NRG
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Drives: 2012 X5 35d
Join Date: Mar 2007
Location: Montreal QC

iTrader: (5)

Quote:
Originally Posted by Pierre Louis
Quote:
Originally Posted by NRG View Post
I use K&N in my D. The X5D filter is as thick as the brick and extremely restrictive. Not sure if the same in E90.
Here is some real data: http://home.roadrunner.com/~jbplock/ISO5011/SPICER.htm

PL
I've read that before, I'm aware. But the fact that my truck runs higher then stock boost settings with remap I'm aware as well. X5D stock filter is double layered paper+cotton ( sort of) I've tried blowing air through it with air gun vs K&N and results were obvious, K&N allows noticeably more air through. I'm not saying it's the best drop in out there simply flows better then stock X5Ds.
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Retired: 2005 N52 E90 330i Sport 6AT
Retired: 2007 N54 E92 335i Sport 6AT

Current: 2012 M57 E70 X5 xDrive35D