VIDEO: Ford Mustang Accessories - Magnaflow Exhaust Installation


You want to install some new accessories on your newer Ford Mustang and a Cat-Back System from Magnaflow Exhaust Products is one of them. This new no maintenance exhaust will give you some noticeable increases in performance. You should see an increase of 11 horsepower and 14 foot pounds of torque in a 4.6 liter V8 (for example). This article will list the steps necessary to take out your stock exhaust and replace it with the Magnaflow aftermarket system.

Required Tools

  • Breaker bar
  • Rubber mallet
  • Ratchet
  • 13 millimeter socket (shallow and deep)
  • 15 millimeter deep socket
  • 3 or 5 inch extension for sockets
  • 13 millimeter open end or combination wrench
  • ½ inch open end or combination wrench
  • Floor jack (Low profile is preferable)
  • At least 2 jack stands
  • Wheel blocks
  • Safety goggles
  • Work gloves (optional)
  • Sawz-all (optional in case you want to just cut the old exhaust out)

Step 1: Jack up the Rear End

Place the jack under the differential and lift it until you can fit easily underneath with room to work. Use the jack stands under the frame or axle for safety. Block the front wheels.

Step 2: Remove the Old Muffler

Using the 13 millimeter socket, ratchet and extension, remove the 5 bolts holding in the 2 muffler hangers. With the 15 millimeter, remove the clamp just behind the axle. Firmly wiggle the muffler back and forth to remove it.

Step 3: Remove the Over the Axle Pipes

With the 15 millimeter deep socket, loosen the bolts on the band clamps. Once the clamps are loosened, wiggle the pipes out. Removing the pipe from under the car is made easier by cutting them in front of the axle.

Step 4: Install the New Over the Axle Pipes

You'll need to get the rear of the vehicle as high as you can for this. You may need to use a shop lift. Couple the pipes and clamp the down tightly.

Step 5: Reinstall the Hangers

With the 13 millimeter sockets and ratchet, reattach the muffler hangers to the car.

Step 6: Install the New Mufflers

Slide the stock hangers onto the pegs on the mufflers. Slide the clamp over the inlet and couple the muffler to the pipe. Tighten the clamp securely. Ensure proper clearances.

Step 7: Double Check Torque on All Bolts and Clearances

The final step is to make sure that all of your bolts are torque to approximately 60 to 65 foot pounds to ensure proper sealing of the pipe junctions. Make sure the pipes and mufflers have at least ½ an inch of clearance from everything under the vehicle, especially plastic parts.

Step 8: Lower

Lift the car off the stands, remove them and lower the jack.

This article has listed the 8 steps required to install new Magnaflow mufflers. 

It's very highly recommended that the exhaust system be cold for your added safety. Also, if the old exhaust doesn't come out easily, you can use the sawz-all plus a hacksaw blade to cut it out.  If you jack and stands aren't tall enough, you may need to look into renting shop space to accomplish this project.



Mustang Pictures

MustangForums Fans