Fuel Systems Solutions Inc. (FSYS:US) gained 31 percent, the most since May 8, to $44.31. The provider of alternative fuel systems said it earned 77 cents a share in the third quarter, excluding some items, 79 percent more than the average estimate of analysts surveyed by Bloomberg. The company also raised its 2009 sales forecast to as much as $425 million, more than the $377 million average estimate of analysts.
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