Quote:
Originally Posted by _RS4_
This is the problem.
It's way cheaper an aftermarket exhaust.
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Quote:
Originally Posted by LimiX4m40
I think that would not be a problem as you can code everything. The price would be for sure high but at the end you have a original bmw part if you get in a controll (in switzerland they really suck at the moment)
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You can do everything if you decide to code . Your original question was to add the US version on EU was to be able to have a better sound without modify the DME . To do this it can be mandatory a DME tunes , so , is more cheap an aftermarket exhaust .
Regarding CH rules if you don't overdo it with the noise the will be no problem just keep the rear muffler stock . This what I do with my X4MC