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      08-16-2007, 01:02 AM   #4

Drives: 2007 328i 6 MT
Join Date: Dec 2006
Location: Bay Area

iTrader: (18)

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Not much out there for a huge addition in HP gains for the 325i. The only one i know of is Turner Motorsports. But it costs a grip and will most certainly void the warranty. Also, I don't know anyone here who's done this yet either. Have a look.

Unfortunately there aren't any turbo kits for the N/A least not yet. It'll be a few years until they develop it since most are working on 335i upgrades.

Your best bet, sell your car and get an M3 or 335i.