Thread: 12 MPG around the city??
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Old 02-24-2005, 04:37 PM
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bobthemilkman bobthemilkman is offline
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automatic LS1 with basic mods should get you around 15-17 city, unless you accelerate hard.

mr. bowtie is right on this one. check the O2 sensor, fuel filter, MAF, plugs, and wires. try running an OBD scanner to see if you're throwing any codes.
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