Performance Upgrades in Grafton

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If you want more power, better handling or a smoother ride from your boat, expert tuning can make all the difference. At OSP Automotive & Marine, we provide diagnostics and performance upgrades in Grafton and across the wider Clarence Valley region. Based in Grafton we service clients in Yamba, Iluka, Woolgoolga, Inverell and surrounds.

Whether you're looking to fine-tune throttle response, identify an engine issue or boost your boat’s overall capability, our experienced marine team delivers smart upgrades that match your boat and your goals. We also offer full marine servicing and can supply and install a wide range of boat accessories to improve comfort, functionality and control.

Leave the workshop behind—call (02) 6695 2155 and let us bring performance upgrades to your boat, wherever you are.

Your boat should work with you—not against you. We take a tailored approach to every performance upgrade, starting with a detailed diagnosis of how your boat’s running and where it can improve. From there, we recommend upgrades that suit your setup, your driving style and how you use your boat—from recreational cruising to wake sports.

Our crew understands the relationship between each system onboard—engine, exhaust, electronics and beyond—so we don’t just bolt things on and hope for the best. We deliver upgrades that make sense and actually improve your boat's performance on the water.

Ready to push your performance further? Let’s get started on an upgrade that brings out the best in your boat.

What types of performance upgrades are available for ski and wake boats?
Popular upgrades include high-performance fuel injectors, intake and exhaust modifications, ECU remaps, throttle body upgrades and advanced ignition systems. These modifications can increase horsepower, improve torque and give better fuel economy under load. Tailored upgrades are ideal for serious watersport enthusiasts who need smoother power delivery and strong performance in variable conditions.
How do I know if my inboard boat needs a performance tune or upgrade?
If your ski or wake boat is struggling to plane, lagging on acceleration, running rich or using more fuel than usual, it may be time for a tune or upgrade. Other signs include poor throttle response, inconsistent RPMs or engine hesitation when towing. A professional diagnosis can pinpoint the issue and determine whether a performance enhancement—like ECU tuning or component upgrades—is the right move.
Can performance upgrades increase fuel efficiency in a wake or ski boat?
Yes, in many cases performance upgrades can lead to better fuel efficiency. Upgrades like ECU tuning, intake system improvements or propeller changes can reduce engine strain and optimise fuel use, especially when paired with regular maintenance. However, results vary depending on your setup, how you drive and the conditions you’re boating in—so it’s worth getting tailored advice before making changes.