TMIC basics on a Subaru WRX/STi:

How hard is it to install a TMIC? Allow around one hour for install time. Professional installation, depending on your area, is around $75. This is one vehicle modification that is very simple and can be successfully accomplished by even the greenest shade tree mechanic.

How do I install a TMIC? Refer to the TMIC manufacturer’s instructions. For TMICs without instructions, below are links to installation instructions:

STI INTERCOOLER INSTALL ON A SUBARU WRX

Should I reset my ECU after this mod? It is never a bad idea to perform an ECU reset after a mod. The traditional route is to disconnect the negative battery terminal, press the brake pedal for a few seconds to bleed the system of charge, and reattach. Some use the more advanced Vishnu Reset.

Which is better a FMIC or a TMIC? There is no definite answer for this. Choose your upgraded intercooler based on the pros and cons of each and your personal goals. Perfect testing of intercoolers is not possible and though not specifically catered towards intercoolers, this Car and Driver magazine article will help point out the reasons why we will never know which is “better”.