HP Estimator

Estimate crank HP and wheel HP ranges based on turbo airflow, injector capacity, and boost. This is an estimator, not a dyno replacement.

No API dependency Range-based output Client-side only

Tip

Open from an engine page to prefill.

Example: ?engine=rb25det

Inputs

Select your setup

Guardrails keep estimates sane.

Engine

Turbo

Injector size (cc/min)

Boost (PSI)

Fuel

Drivetrain loss (%)

Disclaimer: estimates assume common gasoline BSFC and typical duty-cycle targets. Use this to sanity-check component sizing, not to guarantee results.

Output

Estimated power range

Lower number is conservative.

Crank: —

Wheel: —

Limiting factor: —

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