Exhaust System Installation
Axle Back Exhaust System
Dual Rear Exit w/ Twin 4” Pro-Series Tips
BMW F06, F12, F13 M6
PN 14929 & 14929BLK
Factory Exhaust System Removal:
1. Remove plastic splash guard from the rear of the vehicle using the T30 Torx driver, 7mm socket and 1/4” ratchet. The
T30 Torx fasteners are along the back side near the bumper while the 7mm hex head fasteners are placed around the
edges and sides of the shield. (Fig. A)
2. Locate the small dent in the driver’s side exhaust piping near the aluminum and plastic splash guards covering the
rear differential. The dent is located on the bottom of the pipe close to the rear edge of the splash guard. Measure
1.25” from this dent towards the rear of the car and mark the pipe. (Fig. B) Repeat this step on the passenger’s side of
the vehicle.
3. Using the chain-style pipe cutter or other appropriate device, cut the pipe at the mark. (Fig. C) Repeat this step on the
passenger’s side of the vehicle.
4. Locate the vacuum line and vacuum actuator on the outer tip on the driver’s side rear muffler. Remove the vacuum
line from the actuator (Fig. D) and cap with one of the supplied vacuum caps. (Fig. E) Tuck the capped vacuum line
between the heat shield and frame of the vehicle. (Fig. F) Repeat this step on the passenger’s side of the vehicle.
5. Using the ratchet and the 13mm deep socket, remove the nut securing the ground strap to the rear stud of the front
hanger. Remove only the rear-most nut at this time. (Fig. G) Repeat this step on the passenger’s side of the vehicle.
Keep the nuts for use during the Corsa system installation.
6. Using the ratchet, 6” extension and the 13mm deep socket, remove the nut securing the rear hanger to the vehicle.
(Fig. H) Repeat this step on the passenger’s side of the vehicle. Keep the nuts for use during the Corsa system
installation.
7. NOTE: The only thing supporting the muffler at this time is the hanger at the front of the muffler. Take care as to not
let the muffler swing and damage the car and to prevent personal injury.
8. Remove the remaining nut securing the front hanger. Repeat this step on the passenger’s side of the vehicle. Keep the
nuts for use during the Corsa system installation.
9. Remove the factory mufflers from the vehicle.
10. Using the ratchet and 13mm deep socket, remove the nut securing the ground strap to the rear muffler’s hanger. (Fig.
J) Repeat this step for both mufflers. Keep the ground straps for use during the Corsa exhaust system install. The nuts
are not used during the later installation of the Corsa system.
11. Using grommet pullers or a similar device, remove the front hanger and hanger grommet from the muffler. NOTE:
The use of a soapy water solution may aid in the removal of hanger grommets. (Fig. K) Keep the hangers and hanger
grommets for use during the Corsa system installation.
12. Using grommet pullers or a similar device, remove the rear hanger and hanger grommet from the muffler. NOTE: The
use of a soapy water solution may aid in the removal of hanger grommets. (Fig. L) Keep the hangers and hanger
grommets for use during the Corsa system installation.
