Peter Sauber says his team is now paying the price for deciding to scrap development of a blown exhaust system for the 2011 F1 season.
The team elected to halt development of the part earlier this season when the FIA announced that it was to implement a ban, although that decision was then overturned and delayed until later in the year.
It means Sauber has now found itself at a disadvantage after other teams were able to make the most of having a working blown exhaust with the team boss insisting his outfit was paying the price for the FIA's decision to back-track on the initial ruling.
"Our system doesn't work properly," he told Sonntagsblick
. "When they tried to ban it all in Barcelona, we decided to stop with all the expensive development.
"We are paying for it now."