Has anyone replaced the head unit in the car with a nav system and preserved the Nav function?

Just curious how far people have gone with the Nav cars, not looking to replace unless something REALLY cool is available to replace with...

Why? IMHO, the Nav system in the US market Audis is terrible. I much prefer the Nav system used in the European market Audis. You can even watch TV with the Euro system. :-)

The Alpine DVD-based nav system is supposed to be one of the best- very quick recalculations if you miss a turn and the whole country on one disc, IIRC.

The big plus for the TT is that you can hide the whole system under that nice aluminum cover, so no one will know if you have a factory head unit or a $2000 one.

Of course, I think people will be clued in by the Fly Yellow paint, custom wheels, brakes, dash and who knows what else on your car. :-)

If you're talking about maintaining the directional indicator arrow, I think that can be done, if you don't mind getting an EE to take a close look at the system and figuring out exactly how the display is controlled.

The neatest conversion I've seen was a Valentine 1 display integrated into the dash main gauge panel of a Ferrari 348, with the antennae integrated into the windshield, headliner and backlight. This was in an issue of Forza. Considering that the car was owned by an anethesiologist with money to burn, I guess it was a rather costly job.

BTW, is you car still going to have the targa roof? Are you going to use aluminum, steel or glass?

Have you thought of contacting Corning to see if they'll make photochromic glass, a la the Serengeti line of sunglasses they make/made? Now that would be the ultimate window tint.

Regards,
TM