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      01-30-2013, 11:13 AM   #17
Second Lieutenant

Drives: 06 e90 325i, 05 325Ci (RIP)
Join Date: Sep 2011
Location: Charlotte, NC

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Garage List
2006 BMW 325i  [0.00]
If you're ok with not keeping it NA, a supercharger from MMW (not quite on the market yet as far as I know) or ARMA would be the way to go:

ARMA kit (no clue about cost):

MMW kit ($6,500):

If you want to try and make more NA power than anyone else (dedicated race cars excluded) I've heard of:

Active Autowerke stage 2 tune($499):

MMW ceramic coated race headers($1,100):

Noelle Motors stroker kit (Around $16,000):

Things that will work for both:

Lightweight wheels. Apex ARC-8's look good for how little they weigh:

JB Racing Lightweight aluminum flywheel to get more power to the wheels ($629.95):

Aaaand we're done here