Thread: 335i chip
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Old 11-13-2009, 09:47 AM   #6
2nd Gear Member
Join Date: Apr 2006
Location: toronto
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there are many to choose from.

JB3, Procede, AA, Dinan, and a handful of others offer aftermarket options.
gains of 30+whp and up are possible..try e90post for more in depth reviews and options
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