Formula One's governing body has confirmed that the contentious ban on off-throttle blown diffusers will be dropped for the German Grand Prix, with the rules returning to the state that they were in for the European GP in Valencia.
After a weekend of angry shouting over the ban on off-throttle engine maps, which teams are using to help increase the amount of exhaust gases running through their diffusers while the driver is off the throttle, the FIA offered to drop the ban.
On Saturday afternoon, they confirmed that should the teams reach a unified consensus on the matter, they would throw out the new ruling for the rest of 2011.
And after a bit of squabbling from Ferrari and Sauber, the teams reached the required level of agreement, meaning that the FIA have now confirmed an end to the ban.
"All cars will run under 'Valencia' conditions for the remainder of the season," a statement from the FIA read on Thursday.
It went to say that with the teams agreeing to their proposal, they did not foresee any future protests over the issue.
"We are optimistic that there will be no protests over any engine mapping and exhaust tailpipe issues this season," the statement optimistically claimed.
"In addition to the main part of the agreement reached in the TWG meetings it was also agreed that no team would raise a protest against another on these matters for the rest of the season."
The statement also explained why the FIA had taken such a dim view of the engine mapping being used, after an earlier unsuccessful attempt to ban the technology for the Spanish GP.
"The matter was initiated by the FIA when facts concerning some quite extreme, and hitherto unseen, engine mapping began to emerge," the statement rambled.
"We were concerned that exhaust tailpipes were being positioned and engine maps created with the primary objective of improving in the aerodynamic performance of the car.
"Prior to that it had been assumed that any aerodynamic benefits were incidental to the primary purpose of the engine and its exhausts, i.e. that of generating torque."
It went on: "We decided to act as, not only did we consider such extreme mapping to be arguably illegal, but also if such freedom was left unchecked it would result in the teams incurring significant further development costs during the season."
The FIA statement also confirmed that the 2012 rules will forbid blown diffusers by returning to a 'periscope' exhaust design exiting at the top of the rear bodywork, ending the mapping issue at the end of the season. Probably.
"The teams have already agreed to strict constraints on exhaust tailpipe position which will result in them exiting the bodywork much higher up and no longer in the vicinity of the diffuser," the statement said.
"Therefore, any aerodynamic benefit from exhaust gas flow over bodywork will be kept to an absolute minimum."
It added: "Engine mapping will remain free [within existing constraints] as, with the exhaust tailpipes in this new position, it is felt that any aerodynamic benefit will now be incidental to their primary purpose."
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