Porsche 981 Spyder/GT4 Tuning Guide

Porsche 981 Spyder/GT4 Modification Guide

The Porsche 981 Boxster Spyder and Cayman GT4, produced between 2015 and 2016, are already exceptional cars straight from the factory. With their naturally aspirated 3.8-litre flat-six engines, refined chassis, and track-ready capabilities, both models are well-suited to a variety of driving experiences, from spirited road drives to track days. As a result, many owners opt not to modify them, as these cars are already well-balanced in terms of performance and handling.

However, for those looking to personalise their 981 Spyder or GT4, modifications can enhance the driving experience or simply add to the car's aesthetic appeal. While performance gains from engine modifications are relatively limited on these naturally aspirated engines, there are still plenty of options for improving sound, handling, and appearance.

Check out our range of 981 Spyder/GT4 performance and tuning parts here - Please note we are adding more and more products as the days/weeks go by!

Exhaust System

One of the most common modifications for both the Boxster Spyder and Cayman GT4 is upgrading the exhaust system. These cars already sound incredible, but many owners opt for an aftermarket exhaust to enhance the engine note further, whether for a deeper tone or more aggressive sound.

• Sports Exhaust: Many owners choose to install a sports exhaust system to improve both the sound and the car’s performance. Brands like Akrapovič, Fabspeed, and Cargraphic offer exhaust systems specifically for the 981 models, which can increase airflow and slightly improve horsepower.
• Exhaust Valves: For more control over the sound, some systems include exhaust valves that adjust the volume based on engine load. This allows for a quieter exhaust at cruising speeds and a louder, more aggressive tone when you’re pressing on the throttle.

While the increase in horsepower might be modest, the sound improvement is one of the most enjoyable aspects of modifying a Porsche, especially for those who want to make their car stand out.

Brake Pads and Cooling

The factory braking systems on the 981 Spyder and GT4 are high-performance, but there’s always room for improvement, particularly if you plan to take the car on track days or push it to its limits. Performance brake pads and improved cooling systems are common modifications to enhance braking performance.

• Upgraded Brake Pads: If you’re looking to improve braking performance, particularly during high-performance driving, upgrading the brake pads to a more track-focused compound can provide better heat resistance and improved stopping power. Brands like Pagid, Ferrodo, and EBC offer performance-oriented brake pads.
• Brake Cooling Kits: If you plan to track your car regularly, you may want to install additional brake cooling ducts. These kits direct air to the brakes to reduce temperatures and maintain consistent braking performance, preventing brake fade during high-demand use.

While these modifications won’t drastically increase your top-speed performance, they’ll make a significant difference in terms of durability and consistency when pushing the car hard. Check out our range of performance/aftermarket braking pads, discs and other braking consumables here. 

Suspension and Handling

Both the Boxster Spyder and Cayman GT4 are designed with precision handling, but for owners looking to optimise the suspension further or adjust it to specific driving styles, there are options available.

• Lowering Springs: Many owners opt for lowering springs, which reduce the car’s ride height for a more aggressive stance and improved handling. Lowering the car slightly can reduce body roll and improve cornering performance, but it’s important to ensure that the ride quality remains balanced and comfortable for everyday use.
• Adjustable Dampers: For those who want more control over their suspension, adjustable dampers provide the ability to fine-tune the car’s handling characteristics. This is particularly useful for owners who plan to use the car on both the road and the track, as they allow for suspension adjustments depending on the driving environment.
• Anti-Roll Bars: Aftermarket anti-roll bars can reduce body roll and improve stability when cornering. These are often paired with lowering springs or adjustable dampers to fine-tune the car's handling to suit personal preferences.

While these suspension mods can improve handling, it’s important to balance any performance upgrades with the car's original design to avoid compromising ride quality, particularly if you’re using the car as a daily driver. Check out our available suspension products for your 981 Spyder/GT4 here!

Aesthetic Modifications

The Porsche 981 Spyder and Cayman GT4 are striking cars, and many owners look to personalise their vehicles’ appearance further. Whether it’s to make the car more unique or simply to add a sportier look, there are numerous aesthetic modifications available.

• Carbon Fibre Parts: Upgrading to carbon fibre parts can not only save weight but also enhance the car’s visual appeal. Popular parts include mirror caps, rear spoilers, front splitters, and interior trim. These lightweight components can give the car a more aggressive and race-inspired appearance.
• Wheel Upgrades: Swapping out the factory wheels for a set of lightweight, performance-oriented wheels is another popular modification. Brands like BBS, HRE, and OZ Racing offer wheels that reduce unsprung weight, which can enhance handling and performance, as well as give the car a unique look. Be sure to consider the weight and size of the wheels to avoid negatively impacting the car’s dynamics.
• Custom Interior Details: For those who spend time inside the car, custom interior modifications such as sportier seats, different upholstery, or even custom stitching can elevate the driving experience. Many owners opt for Alcantara or leather-trimmed steering wheels, gear knobs, and seat inserts to add a personal touch.

These modifications can give your Porsche a more bespoke, customised feel, without altering its core performance.

Engine Tuning and Performance

Although the naturally aspirated engines in the 981 Spyder and GT4 are already well-calibrated from the factory, some owners look to eke out a bit more performance through tuning. However, it’s important to note that significant power gains from engine modifications are generally limited in these cars.

• ECU Remaps: An ECU remap can alter the engine’s performance characteristics, offering improved throttle response and potentially increasing power output slightly. However, since both the Spyder and GT4 already have well-calibrated engines, the gains from a remap are often modest.
• Intake Modifications: Aftermarket intake systems, such as high-flow air filters or performance intake kits, can improve air intake efficiency. While they may provide some improvement in throttle response, the power gains are typically small and not as noticeable as modifications in other areas, such as exhaust or suspension.

Conclusion

While the Porsche 981 Boxster Spyder and Cayman GT4 are already incredibly capable cars from the factory, modifications can be a great way to enhance the driving experience, improve performance, or personalise the car to your tastes. Whether you’re upgrading the exhaust for better sound, enhancing the brakes for improved performance, or adding carbon fibre accents for a more aggressive look, there’s no shortage of options for those who wish to make their car their own.

However, because both the Spyder and GT4 are already so well-engineered, many owners choose to keep their cars stock or make minimal modifications. If you do decide to modify your 981, be sure to focus on parts and upgrades that enhance the driving experience without compromising the car’s inherent balance and performance.