Originally Posted by
Karlos G
It could be detonation, but I've no had the boost drop before.
Set your timing to 8 degree's BTDC and see what happens.
What actuator do you have, it could be creeping open, perhaps try a little more preload.
Fuelling is a little rich but wouldn't cause this issue.
i have a -31 acutator the turbo is brand new ..
the turbo is starting to load at 2700 rpm...
when i set the timing i let the car on idle an then disconnect the vacumm hoose to the ecu i don t need to close this vacumm line because i gonna do a air leak no? and then set it to 8 degree ?