I think he is overboosting about 2-4 psi as it nears redline which is a lot considering boost generally drops slightly below commanded at redline
I think there is a mechanical problem and then the ecu is trying to control torque via other means but because it’s a mechanical problem it can’t and the car starts running bad
If that flapper (wastegate) in the turbo is not opening to slow down the turbine it will overboost and it will be hard for the ecu to control the boost if that push rod is not opening that flapper and the exhaust can’t bypass the turbine wheel
His wastegate duty is not rising nor is the boost target going up stock or tuned so that’s why I think mechanical...and there really aren’t many parts to the turbo boost control and he has changed the solenoid already...canister, push rod and flapper
I think there is a mechanical problem and then the ecu is trying to control torque via other means but because it’s a mechanical problem it can’t and the car starts running bad
If that flapper (wastegate) in the turbo is not opening to slow down the turbine it will overboost and it will be hard for the ecu to control the boost if that push rod is not opening that flapper and the exhaust can’t bypass the turbine wheel
His wastegate duty is not rising nor is the boost target going up stock or tuned so that’s why I think mechanical...and there really aren’t many parts to the turbo boost control and he has changed the solenoid already...canister, push rod and flapper