The RNS850 sound profile coding = Oh my god!
I know it's been mentioned many times in this forum. But : I just cannot believe my ears... I hated the sound in my touareg so much and this simple coding has exceeded my expectations.
It really is possible that VW did it on purpose (another cheating?) in order to sell more dynaudio systems because it really takes a subpar sound from the original profile and makes it way above average. In fact, the standard sound of Touareg is so bad that I doubt you can really make it great just by investing in amps and speakers/sub. If you want to improve the sound this coding is the first thing to do, then amp and speakers/sub.
Just a quick reminder for the tip:
Using VCDS :
Module 56 (Radio)
Long Coding (7 in VCDS)
Change Byte 4 (which is actually the 5th Byte because the first byte is byte 0). Change that byte from 01 to 00.
I changed from : 02 00 07 02 01 00 00 00 01
To : 02 00 07 02 00 00 00 00 01
It seriously took less than 5 minutes for the garage right beside where I work to do it (they did not use a VCDS, they had some kind of wireless module with a tablet - very nice setup, cannot remember the name).
When it's done, you only get the improved sound after some time (you need to open / close / lock / unlock / open the door I think). But when you get it : you do notice it right away. And then you have to lower the bass in the Setup menu (I put mine around 35-40% - 50 being the middle). No more shallow bass and strange muffling of the sound in general. Also much more volume now
Do it, even if you're not an audiophile, you will not regret!