Red Bull was the first team to harness the concept two years ago and last year optimised it to a degree that allowed it to dominate the Drivers and the Constructors Championship. Despite working to recreate such an effect in a limited way, which led to a rules clarification that forced Red Bull's Renault engine partner to modify engine maps designed to extract the most downforce available from blowing exhaust gases at aero-profiled brake ducts, the Red Bull Racing team has only won three times so far in 2012.
Last year Red Bull was 103 points clear after eleven races, now the team is leading the Constructors Championship after eleven races by 53 points.
Speaking to Autosport, Newey said: "It's pretty much as we feared before the season started. Having explored exhaust blowing technology quite heavily for two seasons and then having that taken away together with other changes like the front wing flexibility test rules, hurt us quite a lot. Probably it hurt us more than other people because we had been exploiting it for longer. It has taken a while to try to understand what we need to do and to recover."
The chief technical director also hinted that Red Bull has yet to re-adapt its car to the engine mapping rule change introduced ahead of the Hungarian Grand Prix at the end of July.
While German World Champion Vettel finished fourth at the Hungaroring, he struggled to match the race pace of the Lotuses and the McLarens and the car was flattered by running on fresher rubber relative to the top three late in the race.
"We've been working with Renault and were suddenly faced with a clarification that was a different interpretation to what we thought we were operating to. That's where we are and we've got to go back and have a fresh look," Newey commented.
