Is McLaren testing two systems of exhaust in Jerez? This seems to be question million noting carefully the MP4-26 who put on track Jenson Button on Friday.
Unbelievably, this is what uncover us details of photos of Friday, the McLaren released track Lewis Hamilton on Thursday had leaks ahead, however, MP4-26 single-seater that piloted Button on Friday had exit exhaust rear. McLaren has tested two exhaust solutions.
Undoubtedly Woking engineers do not have clear, a real nightmare for the mechanical 
by us again returned to surprise. McLaren offers your drivers, two different exhaust solutions. One kind to Red Bull kb7 with the release of quite conventional exhaust at the rear as you saw in Berlin. And then another version with leakage type to Renault R31 located underground.
The main difference between the two seater lies on the lower floors are so different that you can't see with the naked eye.
Jenson Button replied: "Is still too early to answer because we have taken the first collection of data..." could prepare two soil types and use the escape depending on the circuit system? The truth is that by poder… Last year McLaren gave a turnaround with its innovation known as conduit F and this year could have prepared two seater identical except for the soil, version would be developed exhaust (type Renault) system and the other with the simple soil with the departure of rear exhaust gases.
At the moment, it is impossible to know what happens by the head of the Woking team engineers, but in general, the 2009 World Champion made a positive assessment of their test on Friday. "Was a good first day for me in the new car." "He feels well balanced, and I don't see any weakness."
In addition, Button had the opportunity to test for the first time the KERS and the mobile rear spoiler, "There is much work in the cockpit." "The conclusion is that one will get used fast." Button had not proven the KERS, in 2009 BranwGP not mounted energy recovery system in your car.
