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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 V-3 Si supercharger included with the tuner kit is capable of up to‰ۡó»ÌÎÌÊÌÎ_ÌÎÌà_775HP‰ۡó»ÌÎÌÊÌÎ_ÌÎÌà_on modified vehicles. Tuner kits are also available as the Competition Tuner Kit, with the‰ۡó»ÌÎÌÊÌÎ_ÌÎÌà_1,000 HP‰ۡó»ÌÎÌÊÌÎ_ÌÎÌà_capable V-7 JT supercharger for high-performance racing vehicles.