does the 328 have the multi stage intake manifold or is that just the 330? I have to believe if a tuner has access to your car and a dyno, they should be able to burn a custom tune for you. May not be cheap but tuning is tuning and any car can be tuned. It's just whether or not the car is popular enough for them to do it on their own and mass market it. Give them a call.
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2006 E90 325i - Sparkling Graphite
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