The Accel SuperTuner delivers easy, affordable power gains for classic and late-model vehicles. Packed with performance tunes for towing, economy, and racing, it allows instant recalibration of ignition timing, fuel curves, and shift points. Featuring an intuitive interface and fast downloads, the Accel SuperTuner gives enthusiasts control over throttle response, rev limits, and more—helping you get the most out of your street or track build.