[gwyllion]

In het begin gebruikte Abt een Mader V8, maar in 2002 werd overgeschakeld naar een Mugen V8 getuned door Neil Brown (zie Which engine is used in the Abt-Audi TT-R? op 10/10 forum).

In 2003 heeft deze motor de volgende specs:

• Engine: V8 engine, front longitudinal, 90 degree cylinder angle, 4 valves per cylinder, 4 OHC, time chain, to comply with the rules 2 x 28.0 mm air restrictors, three-way catalytic converter
• Engine management: Bosch MS 2.9.2 (DTM standard)
• Engine lubrication: Dry sump, Castrol lubricants
• Displacement: 3998 cc
• Output: about 455 hp (335 kw) at 6800 rpm
• Torque: about 510 Nm at 6000 rpm

bron: Abt Sportsline with courage and experience (Wednesday, April 09, 2003)

Als Audi het DTM project in 2004 overneemt, wordt het volgende vermeld in het persbericht:

V8 engine with approximately 460 hp

The engine previously utilised in last year´s Abt-Audi TT-R is used as basis for the A4 DTM. Numerous details of the four-litre power unit were optimised, which now produces around 460 hp. "The DTM regulations leave the engineers little room for manoeuvre, so detail work is even more important," says Baretzky. The engine ancillaries including the induction and exhaust systems number among these details. When compared with last year, the greatest changes are found in this area. Visible at first glance: The exhaust pipes protrude form the side of the car in front of the rear wheels.

Op dat moment zijn de motor specs:

• Engine: Normally aspirated V8 engine, 90 degree cylinder angle, 4 valves per cylinder, 2 x 28.0 mm mandatory intake air restrictors, three-way catalytic converter
• Engine management: Bosch MS 2.9 (DTM standard)
• Lubrication: Dry sump
• Displacement: 4000 cc
• Output: about 460 hp
• Torque: over 500 Nm

bron: Audi in the DTM: Comeback in Europe's most popular touring car series (Friday, April 02, 2004)

In 2005 zegt Audi het volgende:

Numerous details of the Audi A4 DTM car's V8 engine, producing almost 460 hp, were reworked, which led to a noticeable increase in power, especially in the lower and mid rev range.

De motor specs blijven ongewijzigd:

• Engine: Normally aspirated V8 engine, 90 degree cylinder angle, 4 valves per cylinder, to comply with rules 2 x 28.0 mm air restrictors, three-way catalytic converter
• Engine management: Bosch MS 2.9
• Engine lubrication: Dry sump
• Displacement: 4000 cc
• Output: about 460 hp
• Torque: over 500 Nm

bron: The Audi A4 DTM - In details (Wednesday, April 06, 2005)

Bij de aankondiging dat Audi de volgende 3 jaar (2006-2008) verder geengageerd blijft in DTM, zegt het persbericht:

- New V8 engine for Audi A4 DTM
- DTM is the most attractive racing series outside Formula 1
- Long-term commitment planned

...

In the 2006 DTM, Audi will be competing with an A4 DTM version that has been subjected to further development, bearing the internal project name "R12 plus". Apart from modifications to the aerodynamics and suspension, the A4 DTM will be fitted with a new V8 engine which has been running on the dyno since the end of October.

bron: Audi to increase DTM commitment (Friday, December 16, 2005)

Ik concludeer hieruit dat Audi tot vorig jaar de Mugen V8 gebruikt heeft (maar steeds verder ontwikkeld heeft) en dat dit jaar een eigen V8 gebruikt zal worden. Als dit inderdaad het geval is, zal Audi voor de start van het DTM seizoen wel in de verf willen zetten dat ze een V8 gebruiken afgeleid van de nieuwe RS4 V8 of zo.