Exhaust Talk

November 4, 2026DEA Performance Team

What Are Extractors (Headers)? How They Work, Types and When They're Worth It

Extractors, also called headers, replace the factory manifold with tubular pipes. Learn how Tri-Y, four-into-one, tuned and long-tube designs differ, what else you will need, and how to choose.

October 26, 2026DEA Performance Team

How Loud Will My Exhaust Be? Quiet vs Loud Options Explained

Pipe, hotdog or muffler? What our Loudest-to-Quietest labels actually mean, what causes drone, and how to choose an exhaust that suits a daily driver, a tow rig or a weekend...

October 22, 2026DEA Performance Team

Will a Better Exhaust Improve Turbo Response on a Diesel 4x4?

Does a free-flowing exhaust help a turbo-diesel spool faster? We explain how exhaust back-pressure affects turbo response, what gains are realistic, and which parts of the system matter most.

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...