Ive heard that the MY15-17 OEM STI TMIC is the largest OEM TMIC subaru has ever made.
Apparently its thicker (depth) than the GRB STI 08-14 TMIC.
And has better end tanks for better flow?
According to MRT.
Jump to 5:45 mark.
https://youtu.be/6Z3V0rRq_rQ
Can anyone confirm this ?