seems like i have a similar 'bog' issue as CH Hobbies with my IDM .12 evo3.

my IDM cant hold a steady idle for >5secs; it'll die off...
on the starterbox, if i off throttle and on throttle before it dies off, it'll bog.
however if i off throttle and immediately on throttle, it'll be fine!

track testing found similar issues, parts of the track where i got to off throttle for 2s or more; it'll bog when i on throttle back.

my LSN too rich?