http://www.racecar-engineering.com/n...uestioned.html

A small scandal is brewing about the legality of the winning Brawn GP cars at the Australian Grand Prix. It is claimed that the cars ran throughout the weekend with its exhaust pipes protruding from the bodywork by 10cm, which could be outside the regulations. The Brawn bodywork was changed for the Malaysian Grand Prix suggesting that the question of legality may have been raised during the weekend.
Interesting, that site details pictures and the specific regulations which they could have been in breach of.