http://www.openecu.org/index.php?title=Main_Page (you are here)! Read on this site if you have a Mitsubishi or Subaru and would like to learn anything specific about the hardware (Tactrix cable), or about ECU Flash software. Open ECU forum is to research on developing the program ECU Flash, define vehicles ECU data (ROM), troubleshoot hardware issues specific to certain models and further expand on models within Subaru and Mitsubishi (and some Dodge vehicles). There is also tuning discussion, but it is probably going to be about specific engine management systems.
http://www.scoobypedia.co.uk/index.php Is a great information source for the beginner Subaru tuner, but the knowledge can be used to understand engine management in general tuning.
http://www.romraider.com Read this site if you plan on tuning your Subaru yourself or would just like to learn the aspects of Subaru specific tuning. There are many sweet programs built in to help ease in the tuning process (like MAF re-calibration for one) and data logging. This is the most comprehensive web-site for Subaru tuning
http://www.xpttuning.com/osecuroms Is a site that can help in Mitsubishi and Subaru tuning, with most content in ROM archiving and trouble-shooting tunes. For a VERY fair price, you may also look into having a tune done for you through the site.
If you are looking into model specific tuning methods, you should see if there is a forum for your specific model. Most automobiles have there own dedicated web-sites, usually with a section on tuning or engine management.
For example I use these sites for my rides.
http://www.club3g.com/http://www.thegalantcenter.net/forum/portal.phphttp://www.subaruforester.org/http://www.tristatetuners.com/forum/index.phpJust read all you can on your vehicle with all the pertinent information of your engine’s input/output systems and you will understand the concepts of ECU tuning. Good luck and have fun!