Valentino Rossi has dismissed suggestions that he will try new parts for his Ducati during this weekend's Portuguese MotoGP at Estoril.
Instead the Italian, who has been off the pace relative to the leading Hondas and Yamahas in dry conditions, will wait until Monday's post-race test.
“I think for this weekend the bike will remain more or less the same, except something for the electronics, to improve the character of the engine,” he said on Thursday at Estoril.
“After that will be the Monday test, that will be important because we don't test a lot during the season,” he added.
Rossi is expected to receive new engine and chassis parts for the test, which is the first of only two 800cc test days during the racing season. The second day is after Brno in mid-August.
Seven time MotoGP champion Rossi starts this weekend's event having finished seventh and fifth in his first two races as a Ducati rider.
The fifth place, in the wet at Jerez, was despite an early crash - which also brought down Casey Stoner.
“Unfortunately I had a good chance to make good points [in Jerez] but I made a mistake and lost a lot of points for me and also for Stoner,” said Rossi.
Rossi's team-mate Nicky Hayden went on to take the Desmosedici's first podium of the year in Spain.