Best Porsche 911 Turbo (991) Upgrades: 2014-2019 Guide

The best bolt-on upgrades for the 2014–2019 Porsche 911 Turbo and Turbo S (991) are a titanium Akrapovic Slip-On exhaust, an AWE Tuning performance intercooler kit, and a set of H&R or Eibach lowering springs. The 991 Turbo already leaves the factory with 520–580 horsepower and sub-3-second acceleration, so the goal of a smart 991 build is not to chase big numbers — it is to unlock sound, sharpen the stance, and keep the twin-turbo flat-six cool under repeated hard pulls. Below, our team in Tampa breaks down the four upgrades that deliver the most character and consistency per dollar, with verified fitment, pricing, and install notes for both the 991.1 and 991.2 Turbo.

What Makes the 991 Turbo/Turbo S Worth Modifying?

The 991-generation Porsche 911 Turbo is a 3.8-liter twin-turbocharged, all-wheel-drive flat-six that already ranks among the fastest point-to-point cars ever built — which is exactly why it responds so well to focused, high-quality bolt-ons. There are two distinct sub-generations, and knowing which one you own matters for both parts selection and expectations:

• 991.1 (2014–2016): Turbo makes 520 hp and 487 lb-ft (up to 524 lb-ft on overboost); Turbo S makes 560 hp and 516 lb-ft (553 on overboost). The Turbo S runs 0–60 mph in about 2.9 seconds.
• 991.2 (2017–2019): The mid-cycle refresh bumped output to 540 hp (Turbo) and 580 hp (Turbo S), added a new infotainment system, and tightened the throttle response. A 991.2 Turbo S will hit 60 mph in roughly 2.8 seconds and top out near 205 mph.

Because the car is factory-quick and the drivetrain is famously durable, most 991 Turbo owners are not chasing another 100 horsepower. They want the exhaust to finally match the performance, the ride height to look intentional, and the intercoolers to hold boost temperatures in check during back-to-back pulls or in hot climates like our home base of Tampa, Florida. Every part in this guide targets one of those goals and bolts on with hand tools.

The 4 Best Bolt-On Upgrades for the 991 Turbo/Turbo S

These are the four upgrades we recommend most for the 991 Turbo, ranked by impact per dollar. Every product below is verified to fit the 991 Turbo or Turbo S, is in stock at NLP Performance, and installs without cutting or a custom tune. Here is how they compare at a glance.

1. Akrapovic Slip-On Line (Titanium) — Best Exhaust Upgrade

The Akrapovic Slip-On Line is the definitive exhaust upgrade for the 991 Turbo, replacing the heavy factory rear muffler section with full titanium for a deeper tone and a lighter tail. Because it is a slip-on rather than a full turbo-back system, it retains the factory catalytic converters, needs no ECU tune, and keeps your emissions hardware intact — you get the transformed Akrapovic sound signature without touching the boost plumbing. Note that this kit requires the matching Akrapovic tailpipe set and rear diffuser, which are sold separately.

2. AWE Tuning Performance Intercooler Kit — Best Power-Consistency Upgrade

The AWE Tuning Performance Intercooler Kit is the smartest way to protect a 991 Turbo’s power in the heat, replacing the restrictive factory intercoolers with larger, higher-capacity cores. On a twin-turbo car, intake air temperature is the enemy of repeatable performance: as the factory coolers heat-soak during back-to-back pulls, the ECU pulls timing and power fades. AWE’s cores hold significantly more volume, which keeps charge temperatures lower and power more consistent on hot days and repeated runs. It is a true drop-in bolt-on backed by AWE’s No Check Engine Light Guarantee, and it needs no tune.

3. H&R Sport Springs — Best Handling and Stance Upgrade

H&R Sport Springs are the best-value way to fix the 991 Turbo’s factory fender gap while sharpening its handling. These progressive-rate springs lower the car roughly 0.8 inch (about 20 mm), reducing body roll and dropping the center of gravity without punishing ride quality. Critically, this application is engineered to work with the car’s PASM adaptive dampers and to retain the factory front-axle lift system, so you keep both the electronic damping and the nose-lift that saves your front bumper on driveways. H&R Sport Springs are the brand’s number-one selling product, made in Germany from high-grade spring steel.

4. Eibach Pro-Kit — Best Budget Suspension Upgrade

The Eibach Pro-Kit is the most affordable way to lower a 991 Turbo/Turbo S, delivering a roughly 0.8-inch drop for just $395. Like the H&R springs, these are progressive-rate performance springs that reduce fender gap and body roll while preserving a livable ride. Eibach specifically designed and tested this kit for the 991 Turbo’s PASM electronic dampers, so the adaptive suspension continues to function normally. If you want the lowered, planted look on a budget and do not need the H&R kit’s stated front-lift compatibility, the Pro-Kit is the value pick.

How Should You Prioritize a 991 Turbo Build?

Start with the exhaust, then cooling, then suspension. For most 991 Turbo owners, the Akrapovic Slip-On delivers the biggest emotional payoff for the effort — it changes how the car sounds and feels every time you drive it, and it installs in an afternoon. Next, add the AWE intercoolers if you track the car, live somewhere hot like Florida, or plan to add a tune later, because cooler charge air is the foundation that lets every other power mod work reliably. Finally, drop the car on H&R or Eibach springs to close the fender gap and cut body roll. This exhaust-cooling-suspension order gives you sound, then reliability, then stance — and none of the three steps requires a tune or forces you to give up factory drivability.

991.1 vs 991.2 Fitment and Installation Notes

Always confirm your exact model year and PASM equipment before ordering, because the 991 Turbo spans two sub-generations with different parts. A few key notes from our shop:

• Exhaust: The Akrapovic Slip-On listed here is cataloged for the 991.2 Turbo/Turbo S (2016–2017). Confirm your production date, and remember it needs the matching Akrapovic tips and diffuser to complete the look.
• Intercoolers: The AWE kit fits the 991 Turbo and Turbo S across 2014–2019 but cannot be shipped to California due to CARB rules. It is a direct, no-tune drop-in.
• Springs: Both the H&R and Eibach kits are engineered for cars with PASM adaptive dampers. The H&R set is validated with the factory front-axle lift; the Eibach Pro-Kit is cataloged for 2014–2017. Budget for a four-wheel alignment afterward.
• Wheels: Many 991 Turbo S models use center-lock wheels, so verify your wheel type before buying spacers or aftermarket wheels — conventional 5-lug hardware will not fit a center-lock hub.

Not sure which parts match your VIN? Our Tampa-based team verifies fitment on every Porsche order — message us your year, model, and options and we will confirm before it ships.