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Originally Posted by BADGER

This year, the IndyCar rules committee will allow three turbocharger sizes, depending on the Indy race course: large oval tracks will be permitted to boost the air induction pressure to 1.3 Bar; smaller ovals will top out 1.4; and road courses will reach 1.55. The 1.3-Bar turbocharger boosts the engine's horsepower to about 550 HP, while the 1.55-version stretches the horsepower to about 700 HP.
http://www.edn.com/electronics-news/...a-700-HP-punch

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