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How to Install SLP Loudmouth II Cat-Back Exhaust - Dual Side Exit on your F-150

Installation Time

2 hours

American Muscle
Shop Parts in this Guide

PACKING LIST


WARNING: SLP Recommends wearing safety glasses for the complete installation.

WARNING: SLP Recommends allowing the vehicle to cool (not running) for five hours before beginning installation.

INSTALLATION INSTRUCTIONS– #F31070

1 Raise and fully support the vehicle (a vehicle lift is recommended).

2 Start by removing the stock exhaust system.

3 Loosen the band clamp in front of the stock muffler. See photo 1 below.


4 Next remove the bolts that are holding the rubber isolator hangers to the frame. See
photo 2, 3 and 4 below.


5 With the help of an assistant carefully lower and remove the stock exhaust system from the vehicle.

6 Next remove the stock short intermediate pipe that is being held on by the two bolt band clamp directly behind the stock Y-Pipe. See photo 5 below.


7 Next install the SLP Loudmouth II Exhaust system. Utilize the stock two bolt band
clamp to secure the SLP Y-Assembly to the stock Y-Pipe.

8 The SLP Exhaust System will only use one of the stock rubber isolators.

9 Install the stock rubber isolator as shown below back to its stock location.


10 Install the two SLP Loudmouth II resonators and tailpipe assembly as shown in the photo below, use the 6 remaining torca clamps. Check all clamps twice to make sure they are all tight.


11 The installation is now complete. Lower the vehicle, check tip alignment and enjoy!