Estimate horsepower gains and performance improvements from popular mods.
Enter your stock HP, select your mods, and click Calculate to see your estimated gains.
⚠️ Estimates only. Actual HP gains vary significantly based on your specific engine, tune, supporting mods, fuel quality, and installation. These figures represent average gains reported across various builds. A dyno tune is recommended after any major modification.
Enter your vehicle's stock horsepower and weight. Optionally enter your stock 0-60 time for an estimated improvement calculation. Then select the performance mods you have installed or plan to install. Click Calculate to see your estimated total HP gain, new power-to-weight ratio, and 0-60 improvement.
HP gain estimates are based on average reported gains across community dyno results and manufacturer claims. Actual gains depend heavily on your specific engine, existing modifications, fuel octane, air temperature, and whether a proper tune has been performed. These figures should be used as a rough planning guide only — always dyno tune after significant modifications for accurate results and to protect your engine.