http://www.fia.com/en-GB/mediacentre/pressreleases/f1releases/2011/Pages/cw-qa.aspx We only want to target this one specific issue – what we think is illegal use of maps for aero reasons. We don't want to influence the perfectly legitimate systems on the car – engine braking for example. We're happy for them to use that, but we want to be sure it isn't being abused.
We're saying that if a driver comes off the throttle – zero pedal – then the throttles have got to be [maximum] 10 per cent open at 12,000rpm and [maximum] 20 per cent open at 18,000rpm.
One engine manufacturer is asking for a little bit more – for what appear to be genuine reasons. We have the ability to go back on this particular point, to look at 2009 maps, when [teams] did not have in place the exhausts that they have now. If they needed 28 per cent throttle in order to achieve 0Nm at 18,000rpm back then, then that would appear to be a perfectly reasonable request.
A lot of it depends on engine architecture. For example, we have to be very careful not to disadvantage barrel throttles versus butterfly throttles, because they have a distinctly different way of working. In answer to the question, if it's clear that in 2009 one engine with a butterfly throttle only needed 15 per cent [at zero pedal] but another engine using a barrel throttle needed 20 per cent, we could make a distinction. We don't want to put a figure across the board which will affect one team in a different way to another.