Turbo sizing calculator

Physics-based airflow analysis using BSFC methodology. Accurate turbo compressor map inputs.

Universal turbochargers only

This calculator is designed for custom and aftermarket turbo builds, not direct bolt-on or OEM replacement applications. If you are looking for a drop-in replacement for your specific vehicle, contact us directly and we will point you in the right direction.

This calculator uses industry-standard BSFC (Brake Specific Fuel Consumption) formulas and thermodynamic principles to determine true airflow requirements. Results are estimates based on inputs. Always validate against your turbo's compressor map and consult with a turbo specialist for final selection. Contact Boost Lab, Inc. for expert guidance.

Engine configuration

Build intent

Configuration
Advanced / conditions

A standard aftermarket air-to-air intercooler. Reduces charge temperature by approximately 75% of the difference between compressor outlet temp and ambient. Good for most street and mild track builds.

Used to calculate compressor outlet temperature. A well-matched modern turbo running near the center of its efficiency island typically achieves 70 to 75%. This affects how hot your charge air gets and how accurate the intercooler recommendation is.