Honda says it wants "fair competition for the goodness of the sport" after contacting the FIA regarding an engine loophole which could benefit its rivals.

The FIA wrote to all the teams to confirm that a lack of a specific homologation date for power units in 2015 means updates will be permitted throughout the season. However, as Honda is a new power unit supplier entering the sport this year it has to homologate its engine by February 28 and therefore cannot introduce updates beyond that point.

With the possibility of seeing its rivals improve performance throughout the season while its power unit is frozen, Honda says McLaren has contacted the FIA to explain its unhappiness at the situation.

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"Honda believes in fair competition for the goodness of the sport, and for our fans," a Honda spokesperson told

"McLaren-Honda have contacted the FIA in regards to this issue, but we cannot discuss any details at this time."

Honda will only supply McLaren with power units in 2015 as it returns to the sport since withdrawing as a constructor at the end of the 2008 season.