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mitomarv
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Contact MITO Corporation at www.mitocorp.com They have a Bluetooth module specifically for Porsche that works like the factory Bluetooth with the PCM.
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Thanks for the tire caculator info. I was hoping that someone would know of a company that makes a module that would allow you to add the 22" tire size in the menu. I know there is a company that makes a module for the PCM so you can do Bluetooth through the PCM and was hoping there was one to correct for the tire size.
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I have a 2008 Cayenne Turbo that came with 295 / 35 R21 107 Y tires and I replaced them with 285 / 35 R22 106 V tires. It appears that the Speedometer reads about 3 MPH slow (it shows 67 mph and you really going 70 mph). I went into the main menu where it gives you the option to change tire sizes, but it only goes up to 21" Is there a way to correct this?