Apart from the double deck exhaust, the Brawn BGP001 now appears to be under fire for its exhausts. Racecar engineering have discovered that Brawn adapted (right) its car after the Australian GP at Melbourne after its exhausts were seen protruding the design (left). It is believed the change was fuelled by informal requests of other teams. Earlier on, in winter testing Ferrari faces the same problem and adapted its bodywork and exhaust system to comply with the strict letter of the regulations.
Article 3.8.5 states that after the bodywork is in compliance with every other regulation, one aperture on each side of the car is allowed for the engine exhausts. The question is now whether the exhausts are then considered part of the bodywork or not.
As far as we know however, no formal complaint has been made by rival teams for the BGP 001's configuration at Melbourne, so the team may well be concentrating on the upcoming appeal handling relating to its diffuser.