TUNER KITS For higher-horsepower, custom-tuned installations we recommend a tuner kit, which does not include a fuel pump, fuel injectors or ECU programmer. This requires you or your installer to provide custom calibration and the required fuel components. The NOVI 2200SL supercharger included with the tuner kit is capable of up to 900HP+ on modified vehicles. Tuner kits are also available as the Competition Tuner Kit, with the 1,000 HP capable oil-fed NOVI 2200 H/D supercharger for high-performance racing vehicles. Call Paxton or your dealer for more information.