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1999 Lumina 9C3 L67 swap thread...


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  • 4 weeks later...

Last thing I needed to do to fully complete the L67 swap and use everything the ECM had to offer. 


Edited by Jim_rockford_007
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  • 3 weeks later...

Had to drive to Mt.Airy the other day , so I filled up before I left, and Filled up when I ot back, Straight road trip mileage, No real around town driving and got 32 mpg  LOL so Id say everything is running perfect, I get a pretty consistent 21 mpg around town driving. https://www.fuelly.com/car/chevrolet/lumina/1999/jimrockford/977363

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  • 4 months later...

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