Andrea Dovizioso believes Honda needs to allow him to develop the RCV 212 in order to fight for the MotoGP world championship.
The Italian won at Donington in his second top class season last year, while Pedrosa won at Laguna Seca and Valencia, but the pair only finished third and sixth in the standings.
Dovizioso admits it was a difficult season and calls on Honda to follow his advice in 2010.
"For me, 2009 was the first year I felt a door slamming in my face," he told Motosprint. "I got to a place everyone dreams of but I didn't get the results.
"I'm not like Valentino [Rossi] who was called by Yamaha to develop and everyone has always followed him. I wasn't given power by Honda to immediately change what I wanted to change.
"That's also because the changes I wanted were too big. Honda said 'it's impossible to do everything now, it's better to work for 2010'. I would like to change many things and the people at Honda have understood the situation."
Dovizioso believes the changes he wants to make could help Pedrosa to win the 2010 title.
"In my opinion, Pedrosa too could benefit from the modifications I ask for. He can easily fight for the title, I have no doubt he can do it."