Quote:
Originally Posted by dwx
I don't know if I've seen a case where the issue was present at anything other than idle.
It will take someone being on the dyno to really tell if there is a true power difference. I've seen as many reports of people saying the car doesn't feel any different after the ECU/reflash as those saying it feels down on power. I don't really trust either case, people feel what they want to feel usually unless there is a real big difference.
But idle does point to issues with the cam being retarded, maybe the swing is too great for the ECU to deal with or it happens too slowly. Here is an excerpt from the 08 STi manual on how it operates on that engine, not sure I've seen it posted here before. Keep in mind the BRZ FA20 is probably a little different but same basic principle.
http://www.bescaredracing.com/sti/misc/DAVCS_08_STI.pdf |
The shame is that we are left to guess, speculate, and offer conjecture about what Toyota truly knows, has done, and is doing to remedy these issues on the assembly line/parts pipeline...