This is some good info…figured I would start a thread for the info and add to it.
(some may be wrong so please correct me if so)
A6 C5 Belt Driven V8- 300HP/300TQ
ECU: 2000 ART is ME7.1 / 2001-04 AWN is ME7.1.1
Weight: 3814 lb
Engine Codes: (ART is year 2000, AWN is 2001-04)
Aluminium Block
Aluminium Heads
Powdered Metal Rods
Cast Pistions
Forged Crank
6500 rpm rev limit
11:1 Compression Ratio
Bore: 3.32 in. (84.5 mm)
Stroke: 3.66 in. (93 mm)
Displacement: 255 cu. in. (4172 cc)
Downpipe Size: 2.50"?
CatBack Size: 2.25"
S6 C5 Belt Driven V8-340HP/310TQ
ECU:ME7.1.1
Weight: 4,023 lb
Engine Codes: (AQJ/ANK) BBD
Aluminum Block
Aluminium Heads
Forged Rods
Cast Pistions
Forged Crank
7000 rpm rev limit
11:1 Compression Ratio
Bore: 3.32 in. (84.5 mm)
Stroke: 3.66 in. (93 mm)
Displacement: 255 cu. in. (4172 cc)
Downpipe Size: 2.50"?
CatBack Size: 2.25"
RS6 C5 V8- 450HP/415TQ
ECU: ME7.1.1
Weight: 4,112 lb
Engine Codes: (BCY/BRV) (BRV is RS6 Plus @ 480HP)
Aluminum Heads
Aluminum Block
Forged Rods
Forged Crank
Cast Pistions
7000 rpm rev limit
9.8:1 Compression Ratio
Bore: 3.32 in. (84.5 mm)
Stroke: 3.66 in. (93 mm)
Displacement: 255 cu. in. (4172 cc)
Downpipe Size: ?
CatBack Size: ?