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Thread: suggestions for mpg

  1. #1
    Hey everybody,
    I'm looking for recomendations on how to get better gas mileage.I only get about 17 mpg/hwy.
    MODIFICATIONS: 03 tahoe 5.3 flex
    k&n intake w/tornado
    dual flowmasters
    jet MAF
    Jet programmer
    Any recomendations would be helpful.I read in the post where somebody got a fifth gear built in the tranny--Anyone know if it helped with gas. How about changing my gearing?(currently stock)

  2. #2
    Join Date
    Nov 2003
    Location
    Denton Texas
    Posts
    20,540
    Air the tires up to maximum pressure. Take all the weight you can off the truck, yes that includes the 200 lbs of subwoofers and boxes. Run as narrow of a tire as possible. Slow accelerations help. 3.08:1 gears or higher. Tune the vehicle up and install new plugs and synthetic fluids everywhere. Oh yeah, get a tune from NelsonPerformance for improved fuel mileage.
    See my truck data in the "My Garage" section here... http://www.ls1truck.com/forums/my-ga...tml#post191709

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