Here are a collection of useful racing programs and utilities (shareware & freeware)
written by various authors.

Winzip (free) is necessary to decompress these programs [ download ] [File Size: 1.2mb ] Density Altitude Calculator - calculates denstiy altitiude using barometric pressure, altitude, temp, and humidity, shows corrected altitiude. (Zipped excel file) [ download ] [File Size: 3.45 kb] Race Calculator - useful for calcutating fuel injector size, cfm,blower overdrive, and other information. (zipped file) [ download ] [File Size: 29.2 kb] Dragstrip Plus - useful program to predict power and E.T. (zipped) [ download ] [File Size:570kb] Turbo Power - link to a turbocharged horsepower calculator. [ link ] Turbo Compression - link to a turbocharged compression calculator. [ link ] Turbo Match - find a turbo for your engine. [ link ] Drag Racing - E.T calculator. [ link ] Turbo Map - find correct compressor map for your application. [ link ] Compression Ratio - N/A engine compression ratio. [ link ]