Porsche 991 S/GTS Tuning Guide

Porsche 911 991 S/GTS Modification Guide

The Porsche 911 991 S and GTS models, produced between 2011 and 2019, are already incredibly well-engineered vehicles. They’re known for their superb handling, impressive performance, and timeless design, meaning that most owners will be perfectly content with the factory specification. However, for those looking to personalise their car or enhance the driving experience, modifications can be a great way to do so. Whether for improved performance, aesthetic appeal, or sound, the following guide covers popular modifications for the 991 S and GTS.

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Exhaust Modifications

One of the most popular modifications for Porsche owners is upgrading the exhaust system. The standard exhaust on the 991 S and GTS offers a refined and balanced sound, but many owners want to increase the car’s acoustic appeal.

• Sports Exhaust System: Porsche offers an optional sports exhaust for the 991, which increases the volume and richness of the engine sound, particularly at higher revs. For those looking for an even more aggressive sound, aftermarket exhaust systems from brands like Akrapovič, Fabspeed, or Cargraphic can offer a deeper, more thrilling tone. These systems often improve the exhaust flow as well, potentially increasing performance slightly.
• Exhaust Tips and Customisation: Changing the exhaust tips can be a simple yet effective way to enhance the aesthetic of the rear of the car. Some aftermarket tips, like those from Porsche Design or other manufacturers, can give the car a sportier appearance without needing to replace the entire exhaust system.

Check out Milltek Sport Exhaust systems for your 911 991 S/GTS here

Performance Upgrades

While the 991 S and GTS are already high-performance vehicles, there’s always room to squeeze out a bit more power or improve handling.

• Air Intake Systems: Upgrading the air intake system can help improve engine efficiency, potentially increasing horsepower and throttle response. Brands like K&N aoffer high-performance air filters that are designed to improve airflow into the engine, which can enhance overall performance - View them here
• ECU Remapping/Chip Tuning: For those looking to unlock more power, an ECU remap or chip tuning can be an effective option. This modification involves adjusting the car’s software to optimise engine performance, often increasing horsepower and torque. A remap can be particularly beneficial for those who have already fitted other performance upgrades like a sports exhaust.
• Suspension Upgrades: While the 991 models feature a well-balanced suspension system, upgrading to a performance-oriented set of coilovers can provide improved handling, lower ride height, and a more focused driving experience. Brands like Bilstein or KW Suspension offer coilovers specifically designed for the 911, allowing for precise tuning of the car’s ride characteristics. Check out 911 991 S/GTS Suspension Upgrades here
• Brakes: The standard brakes on the 991 S and GTS are excellent, but if you’re looking for improved stopping power, particularly for track use, upgrading to larger brake discs, sportier pads, or even Porsche Ceramic Composite Brakes (PCCB) could be worthwhile. These upgrades reduce fade under heavy use and increase the overall braking performance, enhancing both safety and driving enjoyment. Take a look at the wide range of bake parts available here!

Aesthetic Modifications

While the 991 already has a striking design, many owners choose to modify the appearance of their car to make it even more personalised or aggressive. Some popular aesthetic upgrades include:

• Body Kits: Adding a front lip spoiler, side skirts, or a rear diffuser can significantly change the look of the car. These upgrades also serve a functional purpose, as they can improve aerodynamics and downforce at higher speeds. 
• Wheels: Upgrading the wheels is one of the most effective ways to give the car a more dynamic look. Lightweight forged wheels, such as those from BBS, HRE, or OZ Racing, not only enhance the aesthetic of the 991 but also reduce unsprung weight, which can improve handling and performance. Wheel sizes and styles can also be tailored to your personal taste, with various finishes like matte black, chrome, or brushed aluminium.
• LED Lighting: Customising the lighting on your 911 can help modernise its look. LED headlight bulbs, fog lights, or tail lights are a popular choice. Some owners even opt for coloured interior lighting or illuminated door sills, which can add a touch of luxury or sportiness to the cabin.

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Interior Modifications

While the interior of the Porsche 991 is already crafted to high standards, some owners like to personalise the cabin to suit their preferences. Interior modifications can make the driving experience feel even more bespoke.

• Sports Seats and Upholstery: Upgrading the seats to lightweight, sports-focused buckets or racing seats can save weight and improve comfort during spirited driving. Many owners opt for custom upholstery options, using materials like Alcantara, leather, or even carbon fibre for a more unique feel.
• Carbon Fibre Trim: Replacing some of the standard interior trim pieces with carbon fibre can add a performance-oriented look to the cabin. Carbon fibre can be applied to the dashboard, centre console, door sills, and even the gear shift surround, giving the interior a motorsport-inspired aesthetic.
• Steering Wheel: Upgrading the steering wheel to one that’s thicker, wrapped in Alcantara, or even fitted with carbon fibre elements can significantly improve the tactile feel of the car. Some owners also choose a sports steering wheel with additional features like a flat-bottom design or race-inspired controls.

Conclusion

The Porsche 911 991 S and GTS offer incredible performance and handling straight from the factory, but for those looking to further personalise their vehicle or enhance its capabilities, there are plenty of modification options available. Whether you’re interested in improving sound, performance, or aesthetics, the 991 can be easily tailored to suit your individual preferences.

When making modifications, it’s important to consider how each upgrade will impact the car’s overall performance and resale value. Opting for quality parts from reputable brands will ensure your 911 remains a true Porsche at heart, even with personalised enhancements. Always consider your goals for the car—whether it’s for road use, track days, or simply standing out from the crowd—and modify accordingly.