IMAP/EMAP tuning theory

Has HP academy discussed IMAP/EMAP (intake pressure/ exhaust pressure) in a past webinar or article? If there's any info on this, could someone point me to it?

Here are some things I found by using the forum search for "MAP/EMAP"

https://www.hpacademy.com/forum/general-tuning-discussion/show/different-altitude-different-load-then-different-afr

https://www.hpacademy.com/forum/general-tuning-discussion/show/barometric-corrections-on-a-ve-based-ecu

https://www.hpacademy.com/forum/efi-tuning/show/air-density-6

https://www.hpacademy.com/forum/webinar-questions/show/136-how-altitude-affects-your-tune

And the webinar on Altitude effects:

https://www.hpacademy.com/previous-webinars/how-altitude-affects-your-tune/

Hello,

I am looking for confirmation of my thinking. When Tuning IMAP/EMAP, What is the Boost area, Boost Threshold and vacuum region values. I would assume an IMAP/EMAP value of 1.0 to be the boost threshold, a value less than 1.0 to be the vacuum region and a Value Greater than 1.0 to be the positive boost region. Is this Correct?

Thanks, Javier

No, it becomes pretty difficult to differentiate in many conditions. Over-run/cruise will always be significantly less than 1.0, small road car turbos will usually result in >1.0 on boost, but with a decent hot side you can be less than 1.0 the whole time - even at full boost WOT.