Are all 20V motors turbo? When did sequential injection start?

[AUDIJIM at aol.com]

In a message dated 1/31/2004 5:53:55 PM Eastern Standard Time, 
quattro-request at audifans.com writes:
20V motors.. 7A (NA)...3B(turbo)...AAN.(Turbo) Others?
KW...20v Turbo (Sport Quattro)
ADU...20v Turbo (RS2)
RR...20v Turbo (1990/91 UrQuattro)
ABY...20v Turbo (S2)
NM...20v N/A (80/90/Coupe)

Just to name a few more....

Jim