In my opinion, this is the best turbo calculator that can be had on the internet, whether free or bought. I hope you enjoy and if you have any suggestions, please feel free to contact me. I hope to have the FAQ section on this page done soon.

http://www.squirrelpf.com/turbocalc/index.php

All configurations are savable and all images are hot linkable. There are around 86 compressor maps available with any configuration of engine parameters.

As a hotlinking example, I hope that my Daytona will produce the following results when I put that turbo on along with a PT1000 intercooler.