Ferrari tested a Red Bull-like flexible front wing last week but will not introduce it this weekend in Turkey.
It has emerged ahead of the Turkish grand prix that the Italian team tried the new wing in test driver Jules Bianchi's hands during the Vairano straight-line test.
Ferrari are however introducing a new wing in Istanbul, and some other developments as the team gets to the bottom of a wind tunnel calibration problem that marred the early progress of the 150 Italia car.
There is also a new rear wing, McLaren-like brake ducts and some tweaks at the blown exhaust, with Fernando Alonso expecting to be a couple of tenths quicker than in China.
"We know now that our data from the wind tunnel was not correct," the Spaniard is quoted by Auto Motor und Sport. "Now we can head in the right direction.
"There is no revolution for here but instead the first of many steps," added Alonso.