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Honda wins IndyCar turbo battle as Chevrolet protest fails

Long Beach IndyCar start 2012IndyCar has rejected Chevrolet's protest against Honda's turbocharger upgrade.

Chevrolet had objected to Honda, which unlike its rival engine manufacturers using a single-turbo rather than twin layout, being given permission to introduce a new housing from this weekend's Sao Paulo street race.

Honda had been allowed to make the modification on the grounds that the series was trying to achieve parity between the alternative turbo layouts - despite this promise not being formally enshrined within the regulations.

But after a lengthy hearing on Thursday, IndyCar ruled that Honda could go ahead with its changes.

"Today, following a hearing on the issues, a three-person panel denied a protest filed April 18 and upheld IndyCar's decision to approve use of a 0.74 A/R compressor cover for the single turbocharger," said an IndyCar statement.

Honda welcomed the decision, saying in a statement that it would level the playing field.

"IndyCar committed well in advance of the 2012 IZOD IndyCar Series season to structure engine regulations focused on creating parity between competing manufacturers, and this commitment played a significant role in our decision to adopt a single turbocharger configuration for the new HI12RT Honda Indy V-6.

"The new compressor cover helps to offset a demonstrable performance disadvantage between single- and twin-turbocharged IndyCar Series engines."

Chevrolet has won all three IndyCar rounds held since the new technical package came into effect for 2012.

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