peeps, share ko lang. not sure kung gaano ka helpful to, but i was looking for a calculator app when i stumbled onto it:

Virtual Engine Calculator

Race Engine Math Calculator. Eliminate the need to look up complicated math formulas and complex calculations to determine how a particular components will affect your vehicle, Virtual Engine Calculator is for you! Virtual Engine Calculator comes with the ability to 'teach itself' about your vehicle thru the unique calibration process. Use Engine calculator to quickly compute Cubic Inches, Compression Ratio, Deck Height, Gearing, MPH, Piston Speed, Torque, Horsepower, RPM, ET from Power, Power from MPH, Carburetor CFM, Altitude Correction, Weather Correction and Unit Conversions.

http://www.download.com/Virtual-Engi...ml?tag=lst-0-1
http://www.virtualengine2000.com/