other things to try:
1. air filter, replace it as a matter of course, theyre cheap
2. check EGR, is it functioning and is it clogged (take a peak into the inlet manifold whilst you are there too)
3. possibly turbo, you'd probably hear that though if it was on its way out
In truth there are 3 influences. 1 film and 2 programs from childhood and two in adulthood.
Herbie goes to Monte Carlo. Sparked my love for scirocco's
The Saint, P1800 and XJS
Guilty pleasure is Knight rider. I fell in love with Pontiacs and and Trans ams. ( where is the emoji for cringe?)
But my two favourite car films in adulthood are, gone in 60 seconds and the remake of the Italian Job.
Red screen means you have mmi2g basic.
http://www.audi-forums.com/c6-forum/48114-mmi-basic-plus-update-cd.html#/topics/48114?page=2
By reading this you need C6StdPlus_0410 update but be careful as some updates of go wrong will block the system and engage component protection with is hard to fix ( only audi dealer)
I would advise to go to local audi dealer and ask about update and newest maps