Tools

Stop guessing your engine's true output. Convert your dyno-proven wheel horsepower (WHP) back to crank horsepower by factoring in specific drivetrain parasitic losses.

Don't just max out the sidewall. Calculate your mathematically optimal starting tire pressure when switching to wider tires or different load ratings based on your factory weight.

Quantify your suspension articulation. Calculate your standard RTI score based on your wheelbase and how far you can drive up a 20-degree ramp before lifting a tire.

Determine your total mechanical gear reduction. Multiply your transmission's first gear, transfer case low range, and axle ratio to see exactly how slow you can crawl over technical terrain.

Map out your solid axle's geometric roll center height. Crucial for dialing in handling and eliminating bump steer when lifting or lowering a chassis with a track bar.

Find your chassis' true vertical Center of Gravity by weighing your vehicle flat, then raising the rear axle. Essential for advanced track geometry and optimizing corner-weighting.

Track your engine's true efficiency. Calculate your exact Miles Per Gallon (MPG) or Liters per 100km to dial in your cruising tune.

Upgrading to larger tires? Calculate the exact ring and pinion gear ratio you need to install to restore your factory acceleration, shift points, and speedometer accuracy.

Horsepower is how fast you hit the wall; torque is how far you take the wall with you. Calculate the exact mathematical relationship between HP, Torque, and Engine RPM.

Stop guessing how tall your tires actually are. Convert standard metric tire sizes (e.g., 245/40R18) into true inches to map out your fender clearances.

Swapping differentials? Calculate your exact engine RPM at highway speeds based on your tire size, transmission gear, and final drive ratio to avoid droning out on the highway.

Never sheer a bolt because of a factory manual written in a different unit. Instantly convert between Foot-Pounds, Inch-Pounds, and Newton-Meters.

Translate confusing wheel specs instantly. Convert between millimeter offset and inch backspacing to ensure proper brake clearance and suspension fitment before ordering your next set of wheels.

Estimate your quarter-mile trap speed and elapsed time based on wheel horsepower and total race weight. Get a true, mathematical indicator of your power output - minus the traction excuses.

Generate the mass airflow and pressure ratio coordinates needed to accurately read any compressor map. Size your turbo perfectly for your displacement to hit your power goals and minimize lag.

Determine the exact injector flow rates required to hit your target horsepower. Calculate safe duty cycles for naturally aspirated, boosted, and E85 setups to prevent leaning out under peak load.

Calculate your precise static compression ratio based on bore, stroke, and head gasket thickness. Dial in your baseline timing limits and fuel requirements before turning a single wrench.