Introduction Audi’s CTSA and CZGA were 2.5-litre inline five-cylinder turbocharged engines that powered the Audi 8U RS Q3. Hand-built in Gyor, Hungary, the CTSA engine was closely-related to the CEPA engine which powered the Audi 8J TT RS Coupe, but differed in that the CTSA engine had: Relative boost pressure of 1.0 bar (compared to […]
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