[e46m3to335i]

Originally Posted by Bimmer86

All I really know about it is this http://www.bimmer-tech.net/shop/bmw-...tion-retrofits. Any particular reason that you didn't just get the tech package? The retrofit will probably end up costing quite a bit more.

This plus some coding:

http://www.ebay.com/itm/BMW-1er-F20-...270cb4&vxp=mtr

http://www.ebay.com/itm/BMW-1-3-4-Se...20713908&rt=nc

= about $800-1200

or

$2150 for the tech package that includes a few other features that I really don't care for.