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      07-18-2011, 09:58 PM   #5
UdubBadger
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Drives: '04 330i ZHP
Join Date: Dec 2007
Location: Chicago Burbs

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2004 BMW 330i ZHP  [9.50]
2011 135i  [7.46]
2008 328xi  [8.76]
I'll be honest, I would say at this point a cold air intake usually hurts these cars more than it helps them. UNLESS, you are driving around a track at the top end of the gears and can use the 3-5hp increase it gives out. If you're just an enthusiast/spirited driver on the highway or even worse, city... the intake usually snags away some low end torque to give way for the top end gain. To me, one of the more attractive parts of these cars is the mass amount of low end torque so i would hate to dip into that for a few top end ponies.

just something to consider.

plus if its not a true cold air (in the wheel well or front grilles) you have to deal with the mass amounts of heat soak.
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