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Originally Posted by slktyperice  There's got to be more power options that what's been beaten to death...best combo for under $1000 is Green Filter/ECU upgrade ($700). After that, it gets really expensive. I'm almost out of warranty at 42k miles (I'm scared for my vario roof)...so I don't really care about voiding warranty anymore. |
Good luck in your research, there isn't anything cheap out there, that's for sure. Cheapest upgrade is to go with the AMG if you are ready to give up MT. It's not worth it IMO, trade it in for a 335i and chip it, that'll give you 50bhp right away, that's what I call value for the money.