Quote:
Originally Posted by jmenge
I would like to order the ebay headers for my z4 M. I wish someone could describe or show a picture of how the rear o2 sensors need modification to clear the transmission. Let us know how your install goes and best of luck!
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I will! I was peeking under the hood and it looks that it is going to be quite an install. It's pretty cramped where the header goes. Let's see when I remove the heat shield and other parts. My main concern is the before cat O2 sensors. They need to have a longer cable. By the way has anyone had problems with the passenger window not going up?