Toyota predicts Turkish GP fightback

The team started the season as one of the main rivals to the Brawn squad, but has struggled to make an impression in the last two races.

In Monte Carlo, Jarno Trulli and Timo Glock qualified at the bottom of the grid.

But Howett is adamant Toyota will be much stronger in Istanbul, where he reckons the fast corners will suit its car.

"Clearly we want - and expect - to deliver a significantly better performance in Turkey than we did in Monaco, which was unacceptable to us," said Howett.

"We saw in Spain and Monaco that we were not good enough on slow-speed sectors and we have worked tirelessly to understand the reason for this.

"It tends to be influenced by traction and this was magnified by Monaco. We have conducted a straight-line aero test and that will give us the information we need to rapidly develop a solution.

"Turkey is a very different circuit to Monaco and I am very optimistic we will be strong."

Trulli added: "I am hopeful of a strong result this weekend. Monaco was difficult for everyone in the team but that is in the past now and we are looking forward to the next race.

"Monaco is basically a one-off circuit for Formula 1 and the Istanbul track is very different so I'm sure we will be a lot more competitive this weekend."