Quote Originally Posted by bb-tt View Post
I suspect it is placebo effect the steering rack for ads is different than non ads vehicle. There is the off chance that the production line ran short on non ads steering rack and put the ads rack in your car. My father worked QC at gm and vw plants and it was not unusual for them to substitute parts on the line.

8T1422066B
Supersession(s): 8T1-422-066-B; 8T1422065P
Complete Assembly. Exc.Dynamic Steering.
Fits A4, A5, S4, S5

2008-12, w/o dynamic steering, new, from 10/20/2009. 2008-12, w/o dynamic steering, new, to 10/19/2009. 2009-2012, w/o dynamic steering, new. 2010-12, w/o dynamic steering, new. 2010-2012, w/o dynamic steering, new. 3.2 LITER, w/o dynamic steering, new. A4, S4; w/o Dynamic Steering.

8T1422066A
Supersession(s): 8T1-422-066-A; 8T1422065N
Dynamic Steering.
Fits A4, A5, RS5, S4, S5

2008-12, w/dynamic steering, new. 2009-2012, w/dynamic steering, new. 2010-12, w/dynamic steering, new. 2010-2012, w/dynamic steering, new. 3.2 LITER, w/dynamic steering, new. A4, S4; w/Dynamic Steering. A5, S5;
Dynamic steering is simply the system that makes the steering wheel weight at low speeds and heavier at high speeds. I thought most of these cars were equipped with that? My parent's former 2012 A4 Premium FronTrak had it, and mine acts similarly to that car. Neither car came factory with ADS.

I could be wrong but I think the difference is that cars with the ADS rack don't have Dynamic steering and therefore maintain the heavy steering weight for example at all times in dynamic mode. My car will still experience lighter steering at low speeds in dynamic mode, but when the steering weights up it's heavier than it would be in comfort given the same conditions. Last time I drove my parents ADS equipped A7 it seemed to keep the heavy steering regardless of speed when in Dynamic.

Long story short I think it works, but not quite same as a factory ADS car.