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 SPARTA, Ky. (AP) - NASCAR teams saw few problems during testing for the new electronic fuel injection cars that will be standard in the series next year.
All four of the Sprint Cup car manufacturers - Toyota, Chevrolet, Ford and Dodge - underwent extensive on-track testing Thursday at Kentucky Speedway.
NASCAR officials say the new fuel injection system will have safeguards to make sure teams can't tamper with them in an attempt to improve engine performance.
The move also puts the series in line with what's available on showroom floors across the country. NASCAR has used carburetors for decades even though the technology has long been gone from mass produced vehicles.
Driver Kevin Harvick says it will have little effect on performance but makes the cars more ``relevant'' to consumers.

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Driver Odds
Odds to Win the US Cellular 250 @ Iowa Speedway
Erik Jones +175
Daniel Suarez +300
Brad Keselowski +400
Sam Hornish Jr. +500
Field +800

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