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      08-21-2013, 02:52 AM   #11
lakesman
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Drives: X1 xDrive23d
Join Date: Jun 2010
Location: UK

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Alpine upgrade not compatible with satnav. Alpine amp powers up on receipt of input and there is a second or two delay. This means missing first bit of satnav instruction.
A better upgrade is to use an amp which can detect that the head unit is powered up. These are quite common now. After having an Alpine upgrade fitted by dealer, I got most of my money back and purchased a Hertz HE amp and this is superb.
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