There were indeed "some" 20V non-turbo model 90's.....years '90 and '91. Even had some "20V" rear badging. Same engine (7A?) as in the Coupe Quattro of the same years. Model years '88 and '89 had the 10 valve non-turbo only. HTH Jim Fleischer Former cars.... '88 90 quattro (my first Audi) '90 and '91 Coupe Quattro's and many more......