Exhaust Talk
DEA 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...
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DEA 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.
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DEA 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...
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DEA 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...
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DEA 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.
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Daniel 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...
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DEA 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...
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David Brown
Will a 3-Inch Exhaust Cause Boost or Fault-Code Problems on Your Diesel 4×4?
Worried a 3-inch turbo-back or DPF-back will throw fault codes or cause overboost on your diesel ute? Here's what actually happens with boost, your DPF and cell count — plus...
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Brad Pruscino
Do Exhaust Tips Change Sound? Here’s What Really Happens
If you’ve ever scrolled through exhaust upgrades, you’ve probably wondered: Do exhaust tips actually change sound, or are they just for looks? Short answer? Yes, but not as much as...
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Brad Pruscino
Tasmania 4WD Tracks Guide: Mud, Coast & Mountain Adventures
Tasmania may be small, but it packs some of Australia’s toughest and most spectacular 4WD adventures. The island’s wild west coast is legendary for its deep mud, tidal beach runs,...
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