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dude- don't cut your dash #1. Get a garmin (best you can afford) #2. They recharge so no need to run wires around your dash #3.
I have the factory nav and use my Nuvi when I need directions nevermind the suction cup.
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2007 M Coupe w/NAV/Premium/Extended Leather, Clearbra, DICE, 4.10 BMW Motorsport Polished LSD, Active Autowerke Gen IV Headers, Supersprint Race Exhaust and X-Pipe, ESS Tuned DME, KWV3 Coilovers, Volk RE30, OEM Strut Tower Brace, Short Antenna, JL AMP, JL 10W7, Valentine V1.
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