[Bobdredds]

http://www.motorsport.com/f1/news/mercedes-hiding-new-double-diffuser-concept-reports/
It looks like they had something to hide after all. Having looked at the regulations and the above article I can only surmise that they are using the exhaust pipes to heat the redirected airflow through the 2 pipes at the rear. Only 2 exhaust outlets are permitted and must be within the technical regs. Checkout the pics here:
http://www.f1technical.net/forum/viewtopic.php?p=312196&f=12

[ShaneB457]

@bobdredds Wow those pics are really good..:)

[Bobdredds]

http://www.autosport.com/news/report.php/id/97662
This move by the FIA was brought to their attention by an engine manufcturer and I think it was Mercedes because engine mapping would have no effect on their system if it was based on heating redirected air. It could prove problematic for some of the others and Red Bull, having used it extensbily to great effect, maybe more than others.
There are rumours Renault and Mercedes-powered teams are still using clever engine mapping techniques for aerodynamic effect. http://paddocktalk.com/news/html/story-183675.html

[HK]

nice picture: http://www.formula1.com/wi/sutton/2011/ded1224fe106.jpg

[Bobdredds]

http://www.motorsport.com/f1/news/mercedes-triggered-latest-fia-clampdown-report/
It seems I was right in my suspicians about who triggered the latest clampdown, it was Mercedes.

[george1066]

Well if it isnt Mclaren tinkering with the rules again… you ve got to admit it is a clever way of redirecting the exhaust.

[Bobdredds]

Mercedes you mean? They would have known what McLaren were doing with the engine though. If the example given by the Fia is true and it was hard on the engine to impliment, then they may have asked Mercedes questions about reliability in that area and aroused suspicians. Also I read somewhere that Red Bull sounded strange in the corners and engine mapping was suspected as the cause. We will know soon.

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