K&N, BMC over Stock air filter?
10-13-2010, 09:54 AM
#11
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Location: Portland OR.
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My Ride: 2006 550i
Model Year: 2006
I have always had a CAI from K&N on all my past and present cars with good performance...except my BMW.
K&N does extensive testing on their products and could not make power on a 550 engine!
Not sure of other models but therefore just a drop in. I have the BMC and RPI ram air which they (RPI) dyno'd
and made power with and I can honestly say it sounds and feels more responsive!
Good luck!
K&N does extensive testing on their products and could not make power on a 550 engine!
Not sure of other models but therefore just a drop in. I have the BMC and RPI ram air which they (RPI) dyno'd
and made power with and I can honestly say it sounds and feels more responsive!
Good luck!
04-28-2012, 09:16 PM
#12
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Join Date: Mar 2011
Location: New Mexico
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My Ride: 06 530i
I realize this is a veryyyy old thread but I just stumbled across this on a e90 forum. Very interesting indeed
http://www.e90post.com/forums/showthread.php?t=137667
http://www.e90post.com/forums/showthread.php?t=137667
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