Porsche 718 Performance Parts: Upgrades That Actually Make a Difference

The Porsche 718 Cayman and Boxster are already excellent sports cars, but enthusiasts often look for more. Whether you want sharper handling, more power, or a better soundtrack, the aftermarket has plenty of options. Not all parts deliver equal value, so it helps to understand what works best for your driving goals.

Engine Performance Upgrades

ECU Tuning

Remapping the engine control unit is the most cost-effective way to increase horsepower. The 718’s turbocharged 2.0L and 2.5L engines respond well to aggressive calibration. Typical gains range from 50-80 hp, depending on the tune and whether you have the larger motor. High-quality tuners like Softronic, Cobb, or APR offer off-the-shelf maps that are reliable for daily driving. Some require sending your ECU, but many are plug-and-play through the OBD port. Be aware that tuning can void your factory warranty, so consider a model with a CARB EO number if emissions compliance matters.

Cold Air Intakes

A high-flow intake reduces restriction and can add 5-15 hp, but the real benefit is improved throttle response and intake sound. Systems from Eventuri, BMC, or AFE use larger filters and smoother piping. Installation is straightforward, and many are CARB legal. Keep in mind that heat soak can be an issue in stop-and-go traffic, so look for a design that encloses the filter or draws air from outside the engine bay.

Exhaust Systems

A proper exhaust system both frees up power and enhances the flat-four note. Options range from cat-back systems (easiest, moderate sound) to full headers and sport catalytic converters (more gains, louder). Brands like Akrapovič, Soul Performance, and Fabspeed offer lightweight systems with drone-free cruising. If you track the car, check noise limits. Headers and downpipes can add 20-30 hp, but they often require a tune to avoid check engine lights.

Chassis and Suspension

Coilovers vs. Lowering Springs

For better handling and a lower stance, coilovers provide adjustable ride height, damping, and sometimes camber. Quality sets from KW, Bilstein, or Ohlins transform the car’s cornering ability without ruining ride comfort. Lowering springs are a cheaper alternative, but they don’t improve damping and can stress factory shocks over time. If you use the car on rough streets, consider a dual-rate spring setup.

Sway Bars

Upgraded anti-roll bars reduce body roll and sharpen turn-in. Adjustable bars allow you to fine-tune balance. Popular options are from H&R, Eibach, or Tarett Engineering. Pairing a stiffer rear bar with standard front helps reduce understeer, a common trait in the 718.

Camber Plates and Control Arms

For serious track use, adjustability in camber and caster is essential. Camber plates on the front struts can give up to -3 degrees of negative camber, improving tire wear and grip. Control arms with adjustable bushings are also available for rear alignment. Brands like Ground Control, Vorshlag, or Morse make precision pieces.

Braking Upgrades

Pads and Rotors

The 718’s stock brakes are strong, but for track days you need pads with higher temperature thresholds. Options like Pagid RS29, Ferodo DS2500, or Endless ME20 offer consistent bite without fade. Pair them with slotted or drilled rotors from Girodisc or Porsche OEM for better heat dissipation. Always bed in new pads properly.

Big Brake Kits

If you have a base 718, upgrading to the S or GTS calipers (or aftermarket multi-piston kits from Brembo, StopTech) significantly improves stopping power and heat management. A big brake kit requires larger wheels (often 19 or 20 inches). Cost is high, but the safety and consistency are worth it for aggressive driving.

Wheels, Tires, and Aero

Lightweight Wheels

Reducing unsprung weight improves acceleration, braking, and ride quality. Forged wheels from BBS, OZ, or HRE can shed several pounds per corner. Tire choices like Michelin Pilot Sport 4S or Cup 2 R maximize grip. For track use, consider semi-slicks like Toyo R888R or Nankang AR-1.

Aero Parts

Spoilers, splitters, and diffusers aren't just for looks—they reduce lift at high speeds. Porsche factory aero kits are well designed, but aftermarket pieces from Techart, Vorsteiner, or RWS are lighter and offer more downforce. Be wary of cheap cosmetic add-ons that do nothing.

Practical Recommendations

Your choice of performance parts should align with how you use the car. For a daily driver, ECU tuning plus a cat-back exhaust and lowering springs give the best fun-to-cost ratio. For weekend track days, add coilovers, brake pads, and stickier tires. For serious competition, you’ll want a full package: tune, headers, suspension, adjustable arms, big brakes, and lightweight wheels. Always factor in professional installation for suspension and powertrain modifications. And if warranty is a concern, stick with bolt-on parts that can be removed easily.

Start with the areas that give you the most feedback: power and chassis. An integrated approach—matching power with appropriate brakes and suspension—will make your 718 more capable without turning it into an unreliable race car. Focus on quality brands that have proven results on the 718 platform, and you’ll enjoy a car that’s truly your own.