Quote:
Originally Posted by InterlagosM3
I have a Carbon Black 35i M-Sport on order (delivery in June) and was wondering if there are any ECU programmer options available for it? I was really pleased with the quickness of the stock vehicle, but would like to squeeze a few more HP out of it. Any help is appreciated.
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I check with Terry Burger over at Burger Motorsports (burgertuning.com), and he has confirmed that their N55 Stage 1 will work in the X3 35i. For $380, you can add 50hp and 60tq to the wheels. It also shows on their website that the 2011+ X3 is compatible.
I'm not affiliated, just giving you one of the most popular options from the 335 community.