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I bought the alpine upgrade kit a few months ago off another forum member and got it installed yesterday at my house. Install was pretty easy but finicky. I am at the dealer now for coding at the tune of $255. I can say before coding I was super happy with this kit and I am excited to hear it after coding. Just for information I have a 2011 135i built in early 2010. I defiantly have the base system but also have a n55 with dct.
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