Quote:
Originally Posted by onewhippedpuppy
You can't just swap out the HU on a modern Porsche, they interface with the rest of the car via a fiber optic interface called MOST. You can get interface kits but they are really pricey, like $600+ just for the interface box.
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Good news: There’s a knock-off of the Dension that gets good reviews on RL and adds USB and Bluetooth (for 996/997/Boxster/Cayman/Cayenne). It goes by the name LAPower or Mr12Volt and sells on Amazon or EBay for around $140. There are several long threads on RL detailing the unit and installation. This would be my recommendation. As it’s pretty plug and play and works well with the MOST ring and factory head unity. I use it in my 997.
Note however, the above only works for PCM 2.1, but I think that’s what you’ve got in the 2008 Cayenne anyway — I don’t think PCM 3.0 showed up until 2009 or 2010.
There are also long threads on RL about replacing the PCM with Android headunits (also usually from China). That’s what I put in my 2006 Cayenne Turbo. It’s not perfect, but it can be made to work well and looks modern/factory. I really like being able to tether to my phone and run Waze on the center console while also streaming internet radio. It’s not terribly expensive — the head unit is only ~$300 and the MOST adapter is another $100. Installation is not terrible, but not as easy as an oil change. The most common complaint about the Android units is that the MOST box is only 2 channel (so you lose fader), but I think the fixed level sounds fine. There is a Russian MOST box that is 4 channel, but there’s no reliable reports of how it does versus the ubiquitous 2 channel box that everyone uses.
If you want more info, I can send links.