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Step by Step How to Replace Old Dual Exhaust Pipes

Dual exhaust is applicable on motorcycles, trucks and cars. Replacing dual exhaust with an aftermarket system may increase engine power, fuel efficiency and provide a better sound. Aesthetically appealing aftermarket dual exhaust pipes can also replace dull and aged components. Dents in the piping, corrosion, age spots and missing hardware are also reasons for dual exhaust piping replacement. Compromised dual exhaust pipes may increase backpressure within the piping, which decreases performance and suffocates the engine. Each replacement exhaust system will include installation instructions specific to the vehicle but there are general steps each process requires.

Instructions

Removing Old Dual Exhaust

1

Open the hood and disconnect the negative battery cable. This black cable is marked with a negative symbol. Also follow this step when working on a motorcycle. Doing so will allow the vehicle computer to reset and recognize the new dual exhaust pipes after completing the install.

2

Lift the vehicle off the ground using jack stands. For four-wheeled vehicles place the parking brake on. Leave adequate room underneath to remove the exhaust components efficiently.

3

Lay the new dual exhaust piping adjacent to your vehicle and compare it to the old exhaust underneath the vehicle for reference to where each new part will go.

4

Spray the flange bolts and exhaust clamps mating the exhaust components together with penetrating oil. This will loosen them and make removal easier.

5

Unbolt the tailpipe from the muffler if applicable with the socket and wrench set. Some vehicles feature a retaining clip that clamps around the Y-pipe and muffler. If this is the case, bend the clip back with a flathead screwdriver.

6

Unplug the exhaust sensor located on the piping between the muffler and catalytic converter if applicable. Sensor locations vary by vehicle.

7

Remove the tailpipe and muffler assembly after unbolting each nut and from its bolt. Locate the exhaust hangers and lift the dual exhaust piping off the hook where necessary. You may also use the hacksaw and cut through the front muffler piping, towards the front of the car, for removal. Refer to the new exhaust installation instructions for specifics.

8

Leave the rubber grommets on the exhaust hangers when removing the exhaust components. If you were instructed to cut the old piping off, spray the newly cut section with oil, which will make sliding the new dual exhaust piping into place easier.

Installing New Exhaust

9

Install the new components from the front of the vehicle towards the rear. Follow the new exhaust instruction manual for directions.

10

Hang the new components on their corresponding hangers and then hand-tighten the necessary flange nuts. Do not torque them to the specification listed in the vehicle owner manual yet.

11

Center the new components before tightening each bolt to the required specification.

12

Reconnect the exhaust sensor and negative battery cable.

13

Start your vehicle and listen for exhaust leaks, which make a hissing noise. You may also strongly smell exhaust underneath the vehicle if it is leaking.