Renault and Newey may have been caught napping
So Williams and Caterham appear to have had their clever exhaust solutions ruled illegal, and you may remember last year all the teams and Renault customers particularly were instructed by the FIA to stop changing their engine mapping for each race. This was believed to be benefiting Red Bull particularly.
The ruling was to tidy up the banning of ‘off throttle blowing’. In simple terms ”off throttle exhaust blowing’ could be described as; when you are driving your car along and you lift your foot off the accelerator to ease through a corner – the engine would scream up to full revs with no gear engaged – and blow a load of hot gases onto something that would increase the traction of your car.