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      12-09-2018, 01:00 PM   #14
rhodius
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Drives: F10 550i
Join Date: Mar 2014
Location: United States

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I'm in the same boat as you. I have a 2012 550i with N63. Still looking to get improvements, all I want is a little more responsive and quicker acceleration.

I was looking at JB4, but someone suggested looking at activeautowerke. I looked at their website, it looks like the chip tune is only for N63TU or S63TU. Can someone correct me please?
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