[https://www.youtube.com/watch?v=0Yglshxokv4 Understanding AFR and Lambda]<br>
[https://ecutek.atlassian.net/wiki/spaces/SUPPORT/pages/378765322/EA888+Multi-Port+Injection ECUTEK EA888 Tuning Guide]
[http://www.nefariousmotorsports.com/forum/] (Not a whole lot that's simos specific)
[https://s4wiki.com/wiki/Tuning] (Not Simos - but still can be helpful)
=== Just saying ===