Dr Helmut Marko has questioned the timing of the FIA's blown exhaust clampdown.
Charlie Whiting told the teams in London on Thursday that restrictions on the sophisticated off-throttle systems will apply as of Silverstone in July, ahead of a total ban in 2012.
Some commentators have seen the mid-season ban as an attempt to curb the dominance of Sebastian Vettel, whose Red Bull team pioneered the current technology.
"Inventions such as the double diffuser and the F-duct were both banned at the end of the year," Marko, Red Bull's motor racing consultant, told German Bild-Zeitung newspaper.
"Now we see a ban in the middle of the season. That's pretty strange.