gas mileage improvement
To learn how trouble-free it is to find this extra power, we spent an afternoon at Granatelli Motorsports, helping Joe Granatelli as he made three simple changes to a 5.3L Silverado pickup and then measured the improvements on a Mustang dynamometer. The selection of power-adding parts included high-performance spark-plug wires, a mass air-flow sensor (MAF), and the Cold Air Kit. When we were done, we’d collectively added 55 extra horses in a single afternoon – without getting dirty. gas mileage improvement
Conclusion
We increased the 5.3L’s horsepower and lifted the power curve between 3,000 and 4,500 rpm. That’s right in the sweet spot where you need power during passing, towing, or hard acceleration. These improvements occurred largely because all of the components are matched to work together with a common goal of improving available power in the rpm range that the vehicle is generally operated in, while maintaining good overall driveability. Now, where’s that hill? gas mileage improvement
Parts List
Here are the part numbers we used on the 5.3L engine. The following parts prices are from MPG PLUS
Granatelli Wires GRN-470000 $160.99
Granatelli Mass Air Flow Sensor GRN-350115-C $329.95
Granatelli Cold Air Kit GRN-410000 $209.95
SOURCES
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"Great Product. Installed on my 03 Cobra. Added about 30rwhp & about 40flbs of torque(556hp/608torque). What's best is I improved my gas milage on the road from about 19mpg to 22.5mpg!
Thanks again for a great product,"
Dixon Hall, Modern Mustangs of Jacksonville, Florida