We had a chance to flog the supercharged trucks on the half-mile oval and 1/8-mile dragstrip at Irwindale Raceway outside Los Angeles. The superchargers worked flawlessly, providing a strong, linear gain throughout the rpm range. From off idle to redline, the engines pulled hard and seamlessly, with no pinging, lag, surge, or peakiness. Other than the serious increase in power, about the only noticeable factor is some supercharger whine, but even at higher rpm, it's not objectionable.

When installed by an authorized Toyota dealer, the superchargers and drivetrains carry the same five-year/60,000-mile warranty as the stock components, or the balance of the new vehicle warranty, whichever is greater. When not installed by an authorized dealer, the supercharger is covered by a one-year, 12,000-mile parts-only warranty. Suggested retail price of the TRD kit is $5875 plus labor. Installation time is estimated at eight to 10 hours if you know what you're doing, longer if you don't.

Source:
Toyota Racing Development
800/688-5912
www.trdusa.com