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    Gas mileage improvement options ?

    Man, so much bad info on in this thread from 10 years ago. If you want to improve the fuel economy, shorter, smaller, narrower, harder rubber tires on your rig. Lower it also. THAT will increase your mileage. K&N filter is just BS that will actually cost you more in the long run if you follow...
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    Heater Hose on Intake Manifold

    Your post makes no sense. What he was talking about is the POS pot metal quick disconnect fitting that threads in to the intake manifold and welds itself to the manifold, then rots out from the inside. I would have suggested yanking the intake, breaking the POS fitting off, then trying to...
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    Engine miss fire problem above 3500 RPM

    I don't know what caused the issue you described but I saw it once with one of my old trucks, a 98 GMC heavy 1/2 ton. I bought it new in 99 and daily drove it for 5 years without issue. The first time the CEL came on was the first time I towed our new travel trailer up a steep grade, I had...
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