I am currently tuning a 2020 Sti with an intake and exhaust. This is not my first Subaru I have tuned or first vehicle I have tuned with Hp Tuners, however this is my first Subaru on Hp Tuners. Overall, it is not bad but does have some drawbacks mainly being the long time to flash roms. One thing I am still trying to figure out is HPs method of boost control. The stock target boost map shows it wants almost 30psi. Obviously, this can't be boost pressure, and for it to be manifold pressure does not make since either bc the car makes 17-18 psi in stock form. Unless the stock boost targets are that far off. Also, when it comes to wastegate duty cycle, we have Feedforward WDC and Wastegate Max DC. Feedforward is only defined as the base duty cycle and Max is only defined as the duty cycle max. Which parameter does what and does anyone have more in-depth explanation of what each does? Last, how the heck do I log boost? I do not see any parameter in VCM and all the manifold pressure parameters do not line up correctly. There is very little support for Hp Tuners in the Subaru world but hoping someone has an answer for me.
