Exhaust Talk

October 19, 2026Brad Pruscino

Types of Exhaust Systems: Axle-Back, Cat-Back, DPF-Back, Turbo-Back and More

When it comes to upgrading your car, few mods make as much impact as a new exhaust system. But with so many types of exhaust setups available, choosing the right...

October 19, 2026Eric Burton

What Does a Muffler Do? How It Works and How to Choose One

What a muffler does, how chambered, straight-through and glass-packed designs work, how it differs from a resonator, when to replace it, and how to choose the right one.

October 19, 2026DEA Performance Team

Best Exhaust for a V8 Commodore, Falcon or Mustang: Single vs Twin, 2.5" vs 3"

Choosing an exhaust for a Commodore, Falcon XR6, XR8 or Mustang? We explain single vs twin, 2.5-inch vs 3-inch, hotdog vs muffler, and where extractors fit, with systems for each...

October 13, 2026DEA Performance Team

Mandrel Bends, Hotdogs, Valved Mufflers and Flex Pipe: An Exhaust Parts Glossary

A plain-English guide to the exhaust parts people search for most: mandrel bends vs crush bends, hotdog mufflers, valved mufflers and flex pipe joints, and how to choose the right...

October 7, 2026DEA Performance Team

Is an Aftermarket Exhaust Legal in Australia? A State-by-State Guide

Cat-backs, DPF-backs, turbo-backs and deletes: what each Australian state actually says about emissions equipment and exhaust noise, with links to the official sources.

September 27, 2026DEA Performance Team

Stainless vs Mild Steel Exhaust: Is Stainless Worth the Extra Cost?

Aluminised or stainless? We break down what actually separates the two materials, what 409 vs 304 stainless means, and what the upgrade really costs using real pricing from our own...

September 21, 2026DEA Performance Team

Does This Exhaust Fit My Car or 4x4? How to Check Compatibility Before You Buy

The model name on your rego papers isn't enough to guarantee a correct-fit exhaust. Here's exactly how to check engine code, cab configuration and DPF status before you order, with...

September 16, 2026DEA Performance Team

Best Aftermarket Exhaust Systems for Cars & 4x4s in Australia (2026 Buyer's Guide)

Which aftermarket exhaust is actually the best for your Hilux, Ranger, Patrol, LandCruiser, Commodore or daily driver? A vehicle-by-vehicle, use-case-by-use-case buyer's guide with the exact systems to shop right now.

September 15, 2026Daniel Fraser

Cat-Back vs Axle-Back Exhaust: What's the Difference?

Cat-back and axle-back exhausts sound similar but replace very different amounts of pipe. Here's the real difference, and why cat-back, DPF-back and turbo-back — not axle-back — are the standard...

September 7, 2026DEA Performance Team

2.5-Inch vs 3-Inch Exhaust: Which Size Is Right for Your Car or 4x4?

Bigger isn't automatically better. Here's how to choose between a 2.5-inch and 3-inch exhaust for your petrol car or turbo-diesel 4x4, and why pipe material and bend quality matter just...