Custom Exhausts & Repairs

At Cannington Performance we take Custom Exhausts & Exhaust Repairs seriously so you get the best possible exhaust system for your vehicle.

Your Exhaust system is made up of a number of components that contribute to your vehicles overall performance. The noise your exhaust makes can tell you a lot about its general condition.

  • A loud roar could signify a hole or crack in your exhaust system
  • A persistent rattle may mean part of the exhaust is loose
  • A tinkling sound could be a problem with your Muffler or CAT Converter

Cannington Performance Custom Exhausts & Repairs in Perth, WA can repair your exhaust whether it be a Muffler Delete, Standard Replacement or a Performance Custom Exhaust Upgrade.

Landcruiser with Custom Exhausts
  • What System Will Best Suit My Car?
    When choosing Custom Exhausts for your vehicle, you should know that size does matter. Some cars perform better with smaller diameter Custom Exhausts, some with large diameter Custom Exhausts. A common misconception is that the larger the exhaust diameter the better the system. Systems that are too large can actually reduce performance levels with their lack of correct back pressure. As a general rule, switching to a Custom Exhaust that is 1/4 inch to 1/2 inch larger than standard will provide the best horsepower gain.

    Most new vehicles can provide a 10% increase in horsepower with a few changes to the exhaust system. This is due to the internal design of the original mufflers, the number of mufflers and resonators used, pipe diameter, the crushing of the original pipework to clear the body of the vehicle, a restrictive catalytic converter and standard manifolds. These will create horsepower robbing back pressure to your engine.
Double Overhead Cam (DOHC) Cars

For double overhead cam (DOHC) vehicles it becomes a little trickier. These engines have a raspy note and we recommend that a large resonator and sports muffler be fitted to a 2-inch system. The resonator will create an expansion chamber under your vehicle that will help with the noise level associated with DOHC vehicles.

4 Cylinder Cars

A lot of vehicle owners wish to step up to a 2 ¼ inch sports system for their standard 4-cylinder car. This is not advisable, as it will only create drone in the cabin, particularly in automatics. We would recommend a 2 inch sports system from the catalytic converter back with a sports muffler.

V6 Cars

For V6 motors a press bent 2 ½ inch system will perform the job well. Depending on your requirements of noise level we would choose from a straight-through muffler, a super turbo muffler or a system with both a muffler and resonator. Installing a muffler and resonator will result in a quieter sports note, still allowing performance gains.

V8 Cars

For V8 motors there is not one answer to this question. A 253 and a 427 are both V8 motors and would require a completely different exhaust system. Given the motor size, the modifications to the motor, engine swaps, gearbox swaps, vehicle clearance, race or street, fuel tank placement, loud or quiet. The list goes on of questions we will ask to match the correct exhaust system to your vehicle and your requirements. The list of different exhaust systems can be endless, single 2 ½ inch, twin 2 ½ inch, single 3 inch, twin 3 inch, high flow catalytic converters, press bent, mandrel bent and so on. Please call to discuss your needs so we can match the exhaust to your vehicle.

Turbo Vehicles

When it comes to exhaust systems for turbo vehicles, there is a large choice. Do you want noise and power or quiet and power? A rule of thumb is a mandrel-bent dump pipe off the back of the turbo will give the biggest power gain and a high catalytic converter will handle the gains with ease. A 3-inch sports system after the catalytic converter will again give power gains with a sports note. You may choose only to have one muffler to gain the note you want. You may ask for a hot dog to be included to help with cabin noise – the choice is endless. In all, we would need to know your requirements to achieve the best exhaust system to suit your car and your needs. We will assess your needs and supply the best possible exhaust system for your vehicle – with a large range of exhausts, we are sure to have the answer.

When it comes to catalytic converters, Cannington Performance Service Repairs & Custom Exhausts use and recommend MagnaFlow high flow systems. Their internal design has no lips and does not create turbulence and with a larger surface area of the high flow catalytic offers higher flow rate than standard body catalytic converters. MagnaFlow have introduced a stainless steel fire ring within their converters, this holds the core in place and offers far better protection from heat melt down over the standard ring found in other catalytic converters.

Cannington Performance Custom Exhausts does not recommend high-flow catalytic converters for every vehicle. To place a high-flow catalytic converter on a small four cylinder (non turbo) car would be a total waste of effort and money. Your money would be better spent elsewhere on your vehicle.

Cannington Performance Custom Exhausts use and recommend Pacemaker extractors (headers) whenever possible. Typically, these headers provide a power increase on cars of between 10-25% . Pacemaker does not make headers for every application so we do use other brands such as Manta, XFORCE, Hurricane, to name a few.

Cannington Performance Custom Exhausts have found that with the correct exhaust system fitted to your vehicle, exhaust gasses escape the engine cylinders with greater ease. With less exhaust gas in the cylinder, a greater intake of air/fuel mixture is achieved. When you combine this air induction with a K&N Filter, your vehicle breathes properly and as mentioned the cylinders are empty allowing in more air/fuel mixture on the intake stroke of the engine. With more fuel/air mixture in the cylinder, you gain more power.

To determine what size system will suit your needs, contact us today via our contact form or by phone on 9451 1334.

Exhaust Manifold

In creating the power to drive most piston engine vehicles, the engine produces extremely hot exhaust gases, up to 1300 ° C from each cylinder. These gases flow in turn from each cylinder as its exhaust valve opens, into the manifold, which is bolted to the engine’s cylinder head. The exhaust manifold, usually made of cast iron, comprises several individual passageways having one for each exhaust valve’s exhaust port. These individual passageways merge into one, forming the outlet.


The function of the resonator is to remove exhaust resonance or “boom” at particular engine loads without restricting exhaust gas flow affecting engine performance. Failure of the resonator may be caused by the same conditions that effect the engine pipe. Cracks due to fatigue, or reduced wall thickness and eventual perforation due to heat erosion are more likely causes of failure.


Extractors, also known as headers, are one of the easiest bolt-on accessories you can use to improve an engine’s performance. Its goal is to make it easier for the engine to push the exhaust gases out of the engine cylinders.

Exhaust Components

Engine Pipe

The engine pipe connects the exhaust system to the engine via the exhaust manifold. Exhaust gas temperature in the engine can reach over 1000 degrees Celsius when a vehicle is climbing or accelerating hard. Cracks due to fatigue or reduced wall thickness and eventual perforation due to heat erosion are more likely causes of failure in the engine pipe.

Intermediate Pipe

The intermediate pipe, sometimes called a connector pipe, joins the front muffler to the rear muffler. Corrosion in this component is more aggressive because lower temperatures in this part of the system do not evaporate the acidic condensation as rapidly.

Rear Muffler

The rear muffler is similar to the front muffler in function, but has different internal construction. This produces the final exhaust note and ensures that noise emissions comply with government legislation. The rear muffler can be positioned either in front or behind the rear suspension.

Catalytic Converter

The catalytic converter is usually located in the engine pipe in close proximity to the exhaust manifold and is now a compulsory component on all vehicles. It converts harmful pollutants contained in the exhaust gas into harmless emissions. Catalytic converters are designed to provide an extended service life. However correct operation of the converter relies on proper engine tuning, the use of lead free fuel and the appropriate maintenance of the overall exhaust system.

Front Muffler

The front muffler is the first component that treats engine-generated sound waves to reduce noise to acceptable levels and ensure correct gas flow through the exhaust system. Most exhaust systems have two mufflers, although some vehicles have up to four. Failure may be caused by fatigue cracking due to severe vibration and aggressive internal corrosion from the condensation of water vapour contained in the exhaust gas forming highly acidic liquid

Tail Pipe

The tail pipe is an extremely important exhaust system component as it must ensure that the exhaust gas is emitted past the end of the vehicle, preventing exhaust gas entering the luggage compartment and ultimately, the vehicle’s cabin. The current trend is to position the rear muffler toward the end of the traditional tail pipe, behind the rear suspension.


We offer a full range of workshop services to vehicle owners located in the Cannington and surrounding area’s.
Our Technicians are fully qualified and you can relax in knowing that your vehicle is in good hands.


Rattles under the car can be caused by loose exhaust components or baffles inside the exhaust system muffler that have broken or rusted loose. We recommend that you bring the car in so that we can check the exhaust system for you and advise on repairs needed.

A stainless steel exhaust will have a longer life span than a standard steel exhaust system as the metal is not as prone to corrosion.

If you have a leaking exhaust the gases that escape from the exhaust contain carbon monoxide which if makes its way inside the car it can have an effect on the passengers in the vehicle. It is very important to have you exhaust system checked and repaired if it is leaking.


We can help make your Car Like New Again !