May 20 (GMM) Red Bull is keeping a key update for the already dominant RB7 car close to its chest ahead of the Spanish grand prix.

Auto Motor und Sport reported earlier this week that the team ran the significant blown exhaust development on Sebastian Vettel's car on Friday in Turkey, but the German crashed just a few laps in.

But when asked what is new here in Barcelona, teammate Mark Webber answered evasively: "Nothing. Spark plugs, new spark plugs."

Team consultant Helmut Marko told laola1.at: "Of course we have updates, but of course I cannot tell you what."

Also with updates in the crucial development area of exhausts this weekend is Ferrari, but Fernando Alonso is not sure the 150 Italia is ready to take on Red Bull.

"It is difficult to beat them in the race - it is nearly impossible to beat them in qualifying - but this is something that we want to change and we want to change starting here in Barcelona," said the Spaniard.

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