Owners manual

Exhaust System Installation
Cat Back Exhaust System
Subaru GR STI Sedan
PN 14863
Full Exhaust System
2.5” Full Exhaust Dual Rear Exit
Audi B8 S4, S5 3.0T
PN 14543, 14543BLK
02/02/15
INS5300
CORSA Performance · 140 Blaze Industrial Pkwy · Berea, OH 44017 · P: [phone] · F: [phone]
3
E - M a i l : s a l e s @ c o r s a p e r f o r m a n c e . c o m · w w w . c o r s a p e r f o r m a n c e . c o m
Factory Exhaust System Removal:
The stock exhaust system will be removed in three sections; the cat-back, driver, and passenger downpipe sections. Having another
person to assist with removal of the cat-back section is highly recommended.
1. Using a 16mm socket and ratchet, remove the 4 bolts and the cross brace near the sleeve clamps connecting the cat-
back section to the downpipes. Set the bolts and cross brace aside for reinstallation later on. (Fig A)
2. Using a T25 torx bit, remove the 6 torx screws holding the plastic undertray near the front of the car. Then, using a
flathead screwdriver, carefully remove the 2 pushpin fasteners from the undertray. The undertray will now be free to
remove from the vehicle. Set the undertray and fasteners aside for reinstallation later on. (See Fig B, C, D)
3. Using a 13mm socket and ratchet, loosen the bolts on the sleeve clamps connecting the cat-back section to the
downpipes. (Fig E, F)
4. Support the front part of the cat-back section using another person or stand to keep the front of the exhaust from
falling.
5. Using grommet pullers or a similar device, remove the 2 factory hangers from the factory grommets near the front of
the cat-back section. (Fig G, H)
NOTE: The use of a soapy water solution may aid in the removal and later installation of the hangers in the rubber
isolators.
6. Remove the rear muffler hangers from the factory grommets. Be careful to support the rear mufflers while removing
hangers from the grommets, as the system will fall and could scratch the rear fascia. After removing both rear muffler
hangers, the system can now be removed from the car. (Fig I, J)
7. Pull the cat-back towards the rear of the car first to separate the cat-back section from the sleeve clamps. Then lower
the cat-back section and remove from the vehicle. (Fig K)
8. With the cat-back section out of the way, begin removing the downpipes.
9. Using a 12mm wrench, loosen the 3 flange nuts on the driver side downpipe and remove the downpipe and gasket
from the car. (Fig L)
10. Repeat step #9 on the passenger side. (Fig M)
11. The stock system removal is now complete.
REMOVAL PICTURES ON NEXT PAGE