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With the stock dual-pump system Lethal utilized JMS Power Max fuel pump booster. It gradually ramps in voltage and will increase fuel pump output by up to 80 percent. Of course, the GT500 features two pumps and two FPDMs, so you need to install a PowerMax for each pump. That wasn't necessary with the three-pump setup, but they did add JMS companion product, the SparkMax bolster the ignition system so it can fire in the pressure-fed combustion chambers.