This Install Guide is intended to help with the installation of the Agency Power Cold Air Intake Kit on the 2015-17 Subaru STI.

INSTALL DIFFICULTY: 

STEP 1 – Remove Scoop by unhooking the 3 clips holding scoop. And carefully remove scoop.

STEP 2 – Un-clip the mass air flow sensor harness.

STEP 3 – Loosen clamps on intake tube, sound tube and airbox. Carefully remove intake tube.

STEP 4 –  Un-Clip the airbox halves and remove the rear section.

STEP 5 – Un-bolt 3 bolts from the front section of the airbox 1 on frame and 2 near fender. Remove the airbox be careful the debris catch can is attached.

STEP 6 – Un-Screw the mass air flow sensor and install into new intake tube. Also add the intake bracket onto tube.

STEP 7 – With Mounting bracket added to intake tube bolt the mount to heat shield. Then install the air filter.

STEP 8 – Remove 1 bushing from factory air box and attach to the hear shield for frame mounting. For easily remove of bushing push sleeve out and bushing will have enough flex. Remember to reinstall sleeve when attaching to mount.

STEP 9 – Carefully install heat shield intake tube. Tighten bolts keeping loose for adjustments.

STEP 10 – Tighten bolts and clamps.

STEP 11 – Install cover over sound tube opening, reuse factory clamp and tighten.

STEP 12 – Re-Install mass air flow sensor harness.

Install Complete