Jarno Trulli brands F1's off-throttle diffuser blowing row as 'ridiculous'

In his column for La Republica, Trulli said that the situation, which resulted in the FIA performing a U-turn over a severe restriction governing the use of the process for the rest of the year, had become too complicated for the teams to understand, let alone fans of Formula 1.

"As a driver, I can't tell what's right or wrong, but the situation has become quite ridiculous," the Lotus driver wrote.

"The issues seem more political than technical and are undoubtedly difficult to explain to the public and too complex even for us to understand.

"At one point our engine guys couldn't understand what was allowed and what wasn't.

Trulli said that it was time for the arguing among team bosses - the like of which was seen between Red Bull and McLaren team principals Christian Horner and Martin Whitmarsh during last Friday's FIA press conference at Silverstone - to stop.

"As the season progresses, it's not right to change everything and modify rules we've lived with for years. It's unthinkable, it creates huge confusion and team bosses need to reach an agreement, pick a common line, and not change anything until the end of the season.

"They need to quit saying they're unhappy and must suggest something definitive. Bouncing responsibilities backwards and forwards has never worked and the constant revolution does nothing but create confusion.

"Let's stop ruining everything at a time when F1 shows spectacle and overtaking. Let's stop bickering."