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Suck, Squeeze, and Blow

Posted in How To on June 3, 2004 Comment (0)
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Suck, Squeeze, and Blow
0407or aem00 z

We like the Toyota Tundra for a bunch of different reasons, but the most important one is that you can drive off the dealer's lot with 4WD and a factory supercharged V-8 engine. The TRD package for the Tundra, which includes the righteous supercharger addition, offers a smooth, hard-charging engine that cranks out more than 310 lb-ft of torque at the rear wheels. This truck is by no means a slouch.

As you know, we can never leave well enough alone, and a few new upgrades to our truck's suspension left us feeling less than mighty in the power department. After we swapped our stock wheel and tire package for new 5-inch-larger-diameter rolling stock, we lost all the great acceleration that we loved about the truck when it was stock. Without going to the expense of regearing the factory rearend, we looked to AEM to give our truck a shot in the arm and bring the power level back to where it'd been. Another reason we wanted to improve the engine's breathing ability was because after testdriving an '04 Tundra, we noticed that its engine was making nearly 7 psi of boost, while our '03 model only made 5 psi.

AEM came to the rescue with its new AEM Brute Force air intake system, which installed in less than 20 minutes. The mandrel-bent 6061 aluminum piping is designed and tuned to achieve the optimum sound wave for speeding air through the inlet pipe to the intake manifold. This isn't just another piece of chrome-plated steep tubing that looks good and doesn't do anything but direct hot air into the engine. The inlet pipe connects to AEM's own four-layer cotton-gauze filter element, which is shielded from the heat of the engine compartment. A pre-bent heatshield with a rubber gasket seals off the engine compartment from the filter and helps the engine breathe in fresh cool air from the truck's inner fenderwell.

The installation and subsequent dyno testing took place at R&D Dyno Service in Hawthorne, California. The Dynojet chassis dynamometer showed that even without driving the truck hundreds of miles to allow the computer to adjust to the new air intake system, the engine still made some real horsepower and torque gains. Usually, we have to put quite a few miles on a truck in order to find a measurable increase in power, but this was not the case. Moments after the installation, the engine cranked out an additional 18.1 hp and 5.3 lb-ft of torque with the AEM parts.

For more information on this awesome product, contact AEM using the information at the end of this article.

Maximum horsepower = 271.4 @ 5,250 rpm
Maximum torque = 315.1 lb-ft @ 3,750 rpm

Dyno Information
4.7L supercharged V-8 (stock)
RPMTorqueHorsepower
3,000273.9156.4
3,500315.0209.9
4,000311.3237.1
4,500287.3246.2
5,000287.32264.9
5,250271.5271.4
Maximum horsepower = 289.5 @ 5,250 rpm
Maximum torque = 320.4 @ 3,500 rpm

View Slideshow

Sources

Advanced Engine Management Inc.
Hawthorne, CA 90250

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4.7L supercharged V-8 with new air intake
RPMTorqueHorsepower
3,000278.8159.2
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4,000312.7238.2
4,500285.5244.9
5,000294.4280.3
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