Torque, HP, gas mileage upgrades
Looking into some upgrades and wondering if any have worked for any of you. I have a 2007 new body style silverado, crew cab, short bed, 4x4, 5.3, 3.73 gears. Have any of you had any increase in horse...
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I agree with downtheroad.
You could see some improvements, but you'll pay for it (cash, droning sound at highway speeds, etc.). When I bought my 2004 Expy with 5.4 in it, the previous owner included an almost new K&N intake. Box said, "Adds 9.7 HP at 4,100 RPM!" That's less than a 4% improvement.
You could see some improvements, but you'll pay for it (cash, droning sound at highway speeds, etc.). When I bought my 2004 Expy with 5.4 in it, the previous owner included an almost new K&N intake. Box said, "Adds 9.7 HP at 4,100 RPM!" That's less than a 4% improvement.
