aidanjaye wrote:Thought 0090 was only for cold starting? How does it effect the exhaust note (once warm)?
If the injection and spark timing strategy is different it can affect how forcefully the spent gasses are expelled from the cylinder, and hence affect the exhaust note at all times.
It's definitely there as others have mentioned, and as my wife, brother and sister-in-law can confirm.
BTW had a great holiday near Nevers in France, including a trip to the former F1 circuit at Magny-Cours (unfortunately the Ligier Museum was shut), and brought over 100 bottles of wine and champagne back with us (which is another reason I love the RS4 Avant).