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This has been discussed in detail in a previous thread. Might want to try a search. It's not going to be easy or cheap to upgrade. Sorry.
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Colonel (Retired), US Army/Hagerstown, MD
2016 518ixdrive/MSport AW/Ivory White
ED-01-10 2010 Z4s30i AW/Beige/Burl/ 6MT/SP/PP/CWP/NAV/ipod/USB/CA (retired)
2011 335d BS/Oyster/PP/CWP/NAV/ipod/USB(Daily Driver) 30+ mpg  (retired) |