Performance Exhaust in Grafton

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If your factory exhaust is holding you back, it’s time to upgrade. At OSP Automotive & Marine, we install performance exhausts in Grafton that deliver serious gains—not just noise. You’ll get better flow, more torque and a deeper note that makes your presence known.

Whether you’re chasing muffler upgrades, full custom systems or want to wake up your engine, we’ll get you sorted with precision installation and quality parts built for Aussie conditions. Our team works on all makes and models and understands how exhaust flow connects to overall vehicle performance.

Pair it with EFI and mechanical fault diagnosis to optimise your setup, or talk to us about mechanical repairs and 4x4 upgrades while you’re here. No inflated dealership rates, no pressure—just honest advice and high-calibre work.

If you want to boost power, sharpen sound and turn heads—call (02) 6695 2155 to book your performance exhaust upgrade.

A well-designed exhaust system isn’t just about noise—it’s about balance. Our muffler and exhaust upgrades are tailored to enhance your vehicle’s output while maintaining driveability.

That means better throttle response, cleaner emissions and smoother power delivery—all without overdoing it.

We work with quality systems that improve airflow without throwing your setup off balance. Whether you want a bolt-on performance exhaust or a custom configuration to suit other mods, we’ll make sure it’s fitted right and tuned to your driving style.

Our team knows what works, what doesn’t and how to avoid the common pitfalls of poor installations. Let’s get your exhaust sorted—talk to us about upgrades that actually make a difference.

Can OSP Automotive & Marine perform Performance Upgrades for LS Series Commodores?
Yes, we specialise in Performance Upgrades for LS Series Commodores. Whether you want to improve horsepower, torque, or overall performance, we offer a range of upgrades, including intake and exhaust enhancements, ECU tuning, and more. Our technicians have extensive knowledge of LS engines and will help you achieve your desired results.
What are the benefits of upgrading my vehicle’s exhaust system?
Upgrading your exhaust can improve performance, fuel efficiency and engine sound. A performance exhaust reduces back pressure, helping your engine breathe better and operate more efficiently. That means more power, smoother throttle response and sometimes better fuel economy. You might also notice a deeper, more aggressive tone depending on the system. It’s one of the most popular mods for both daily drivers and car enthusiasts because it adds performance and personality without breaking the bank.
Do I need a tune after installing a new exhaust system?
In most cases, a simple cat-back or axle-back exhaust upgrade doesn’t require a tune. But if you’re installing a full system—especially one that includes headers, a high-flow cat or changes the oxygen sensor setup—then a tune is recommended to optimise performance and avoid engine management issues. A proper tune ensures the air-fuel ratio is right, helps prevent check engine lights and gets the most from your upgrade.