Performance Calculators

Tuner Tools

Free calculators and guides for serious builders. No fluff — just the numbers.

⛽ Injector Duty Cycle

Calculate injector duty cycle at a target HP

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🔥 Horsepower from Torque

Convert dyno torque to horsepower at any RPM

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💨 Turbo A/R Sizing

Estimate the right turbine A/R for your power goal

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⛽ E85 Blend Mixing

How much E85 to add to your pump gas to hit target ethanol %

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📐 Gear Ratio & Top Speed

Calculate top speed based on gear ratio, tire size, and RPM

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🌬️ NA Compression HP Estimate

Estimate HP gain from compression ratio increase

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🏁 Trap Speed HP Estimator

Estimate wheel horsepower from 1/4 mile trap speed

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🔄 Unit Converter

Quick unit conversions for builds & dyno data

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Guides

Knowledge Base

Bolt-On Basics

Cold air intake, exhaust, and tune — where to start for the most gains per dollar.

📖 8 min read

Forced Induction 101

Turbo vs supercharger, sizing your setup, fueling requirements, and what to upgrade first.

📖 14 min read

Reading a Dyno Sheet

How to interpret power and torque curves, identify flatspots, and compare dyno results.

📖 10 min read

High-HP Fuel Systems

E85, methanol injection, port injection — fueling your big power build the right way.

📖 12 min read

Track Prep Checklist

Everything your car needs before lapping: brakes, cooling, safety, and data logging.

📖 12 min read

Choosing a Tuner

What to ask before booking, how to vet a shop, and red flags to watch for.

📖 6 min read