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GM already has some options to improve the overal fuel-efficiency across the range. The turbocharged 2.0L Ecotec could even be applied to a Silverado 1500 or to the late Hummer H3. With the same tuning stage currently used in the Buick Verano, it has more power than the Vortec 3700 5-banger and the same torque of the Vortec 4300 V6 from lower RPM bands while retaining a broader torque curve which enhances the driveability, all in a smaller lighter package.
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