I have replaced wastegate actuator in my 9000CS 2.0lpt maptune stage1 to cure uneven boost problem. The replacement is HKS actuator with 0.8bar specification. The base boost is adjusted to 0.8bar. Max boost reading goes up to 19-20psi.
Previously, max boost reading was 15-16psi, thus, ~3psi increase.
I emailed to Johnny(maptun) about 0.8bar base boost setting and he said it is too high and the trionic will not be able to cut boost if engine knock is detected. At the moment, I adjust the HKS actuator to 0.5bar(that is as far as i can go). I remember that to standard base boost for my car is 0.4bar. I have questions.
1. I thought APC and Trionic box control the boost pressure. With the remapped ECU, max boost pressure goes way beyond the base boost,why increase base boost also increase max boost?
2. The HKS actuator is 0.8bar specification. Should I continue to use it and set it at 0.5bar or should i go to buy new one and set base boost to 0.4bar as standard?
Cheers


I emailed to Johnny(maptun) about 0.8bar base boost setting and he said it is too high and the trionic will not be able to cut boost if engine knock is detected. At the moment, I adjust the HKS actuator to 0.5bar(that is as far as i can go). I remember that to standard base boost for my car is 0.4bar. I have questions.
1. I thought APC and Trionic box control the boost pressure. With the remapped ECU, max boost pressure goes way beyond the base boost,why increase base boost also increase max boost?
2. The HKS actuator is 0.8bar specification. Should I continue to use it and set it at 0.5bar or should i go to buy new one and set base boost to 0.4bar as standard?
Cheers