Turboxs Front Mount Iintercooler 2015-2021 Subaru STiOne of the biggest keys to making consistent power in a 2015+ Subaru STI is managing the intake manifold temperature. This is an issue when the STI is bone stock and becomes an even bigger issue when you start to modify it. The stock top mount intercooler simply isnt up to the task. After just a few minutes of hard driving, the small, overworked TMIC quickly becomes heat soaked. Intake manifold temperatures rise quickly and power output drops off even