Consistent ignition and precise fuel management are vital when pushing the BMW-derived B58 engine to its absolute limits. Eliminate high-rpm spark blowout and ensure perfectly clean combustion by replacing aging components with highly reliable Genuine Toyota Coilpacks, or step up to high-output Uprated B58 Coilpacks for high-boost applications. To easily manipulate sensor signals and unlock instant horsepower and torque gains without permanent ECU modifications, explore the plug-and-play RaceChip GTS5 Black Tuning Boxes, designed to completely transform the acceleration of your GR Supra.