Not sure if you noticed that I have a DSP amp for sale here on the forum.

I guarantee it works perfectly and am 99% sure it is backwards compatible to any facelift DSP X5. It came out of my 2006 with NAV, but if for some reason it is not compatible you can send it back and I'll refund you the purchase price.

http://www.xoutpost.com/classifieds/...8is-400-a.html

$400 shipped in the US. If you want to send me your VIN I can double check with the dealer for you.

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12 X5 M - 06 X5 4.8iS - 03 X5 4.4i - 03 M5 - 02 X5 4.6is - 99 M3 Dinan S3 - 98 M3 - 92 850i-6 - 92 850i - 91 325ix - 89 M3 2.5 - and a few parts cars