GrimmSpeed 02-07 WRX Top Mount Intercooler - Manual (Page 6)

Figure 10: Remove TMIC
8. Next, we’ll prep the GrimmSpeed unit for installation. Unbox the thing
already! Start by removing the protective seals on the inlet ports. We’ll attach
the y-pipe first. Remove the y-pipe pieces from their packaging and identify
the three (3) T-Bolt clamps marked 51-59mm. Loosely assemble them with
the straight coupler as shown below.
Figure 11: Assemble y-pipe
9. Now use the four (4) 12mm bolts from your factory intercooler to attach the
new GrimmSpeed y-pipe to the GrimmSpeed TMIC. Be sure to place one of
the included gaskets under each flange before assembly.
Loosely install clamps