Honda have launched an attack on motorsport boss Max Mosley's plans to revolutionise Formula One in 2008.
Max Mosley 's proposals have caused unrest among some F1 teams
Along with BMW, Toyota, Mercedes and Renault, Honda have refused to sign up to F1 beyond 2007 because of Mosley's new measures designed to slash costs.
They are especially angry that Mosley's plans include reducing the reliance on technology in race cars.
Honda Racing chief Yasuhiro Wada said: "People are upset with it. The reason we race is for technical things."
Mosley, president of motorsport's governing body the FIA, recently issued a draft version of the rules he wants imposed from 2008 onwards.
But an agreement for the future of the sport has been hampered by disputes over safety issues and profit-sharing.
The FIA believed it was moving closer to a long-term plan to replace the existing secret Concorde Agreement, which governs the sport.
But while Wada, president of Honda's racing arm, claimed a financial deal with F1 commercial rights holder Bernie Ecclestone was within reach, he still raised doubts over the chances of an agreement with Mosley on rules.
"We need to talk with the FIA about the future regulations," Wada said.
"I think commercially it is not a big issue for us. We are not racing for commercial reasons, so money allocation and so forth we can compromise on - that is not our priority.
"If the regulations go with the 2008 proposals there is not much to work with. Where is the technology?"