EngineCalc

EngineCalc is a collection of useful formulas (calculators) for those involved with powersports or engine tuning, in general.
Instead of carrying around a laptop or relying on access to a desktop computer with a spreadsheet, you can get the calculations you need right on the handy iPhone in your pocket.
Here is a partial list of the "calculators" provided here in EngineCalc:
* Actual Volume Flow
* Air Density
* BHP Loss
* Compression Height
* Compression Ratio
* Corrected BHP
* Cylinder Displacement
* Horsepower
* Mass Flow
* Piston Dome Volume
* Piston Speed
* Rod Length
* Simple Horsepower
* Theoretical Volume Flow
* Torque
* Volumetric Efficiency