How to Choose the Right Exhaust System For Your Holden 4x4

Holden is the oldest Australian car manufacturer that started in 1856 as a saddle maker. They quickly tuck-over the car production business in Australia, producing quality, powerful cars. One such branch of cars is the 4x4 - the powerhouse of automotive vehicles.

The 4x4 is one of the most popular types of cars used in Australia, mainly because of the terrains. 4x4's have a lot of power, since they use both the front and back wheels to push, so naturally they require a good exhaust system (to release all of the motor debris). But in order to choose the most effective and useful Holden exhaust system, you will need to learn more about them.

Be Warned : If your exhaust system is faulty (such as clogging), it can ruin your motor and weaken your car's performance overall. Plus not to mention the pollution that can be caused by faulty Holden exhaust systems.

Types of Exhaust Systems

The exhaust system has three main types header-back, cat-back and axle-back. They all server different purposes and need to be understood before purchase.

Header-back

This type of exhaust systems replace everything from the header to the tailpipes. This allows for an upgraded exhaust diameter to be installed with better flow and overall performance. But because this type of system replaces so many parts, it is both more expensive and harder to install.

Cat-back

This type of exhaust usually only replaces the muffler and the tailpipes, but in some cases can come with a mid-pipe, X-pipe, Y-pipe and H-pipe. These are the most used exhaust systems because they are relatively cheap, free up exhaust gas flow and add a bit of power to your vehicle.

Axle-back

One of the cheapest types of exhaust systems axle-back exhaust systems only replaces the parts from the rear axle to the exhaust tip. They are very easy to install and add an amazing sound to your car.

Components

There are three main components when it comes to exhaust systems that you will need to worry about the header, pipes and a muffler.

The Header

You will find headers made from cast iron, although this is a cheaper solution, it is not a good one. Cheap cast iron headers tend to have debris of iron left inside the pipes, which can clog up your motor and cause serious damage. Mild steel or stainless steel are the recommended materials as they will improve the flow, instead of blocking it.

As for the size of your header – most motors below 5500cc can work best with a 3.8cm header tube. For larger applications you can consult a mechanic for the appropriate size.

The Pipes

The pipes are what connects your header and muffler together. The easiest and quickest way to determine the diameter of your pipes is by counting 2.5cm for every 100 horsepower. For example a 550 horsepower engine will require two 6.5cm pipes. This is quite a rough estimate though and for more precision you can try this online calculator and consult a mechanic.

The Muffler

The muffler affects both the performance and the sound your car will produce. In the end, the choice is between a low growl or waking up the neighbourhood when you start your engine. When choosing a muffler it is mostly about personal taste and hearing.