Porsche 911 Turbo S 991.1 and 991.2: the catapult you can hear, the exhaust system guide
The 911 Turbo S 991.1 and 991.2 are benchmarks among sports cars you can use every day: a 3.8-liter biturbo flat-six, 560 then 580 hp, and all-wheel drive that turns every acceleration into a catapult launch. The paradox: their factory exhaust is designed to let nothing out. The same Rog valved exhaust fits both phases; this guide helps you settle its configuration.
Your valved exhaust for Porsche 911 Turbo S 991.1 is configured from your VIN, and the Porsche 911 991 Valved Exhaust page brings together every system we make for this generation.
Your Rog exhaust for Porsche 911 Turbo S type 991.1 or 911 Turbo S type 991.2
Price shown on the product page, in your currency
Configure my exhaust- Vehicles
- Porsche 911 Turbo S type 991.1 (2013-2016) ; Porsche 911 Turbo S type 991.2 (2017-2019). Same exhaust for the coupé and convertible
- Engine
- Porsche 911 Turbo S type 991.1: 560 hp ; Porsche 911 Turbo S type 991.2: 580 hp
- Exhaust
- Valved cat-back, built for your VIN
- Material
- 304 stainless steel or titanium
- Front section
- Optional: catted downpipe with 200 or 100 cells, or decat
- Valves
- Rog remote, or factory control if your vehicle has it
- Lead time
- 20 working days from order confirmation to delivery
- Warranty
- 3 years, parts and workmanship
Closely related versions have their own guide: Porsche 911 Carrera 3.4 / 3.8 type 991.1, Porsche 718 Boxster / Cayman 2.0 turbo type 982, Porsche 718 Boxster / Cayman GTS 2.5 turbo type 982, Porsche 718 Cayman GT4 / Spyder 4.0 type 982.
The 3.8 biturbo flat-six of the 911 Turbo S 991.1 and 991.2
Both phases of the Turbo S rely on a 3.8-liter flat-six mounted behind the rear axle and boosted by two variable-geometry turbos. The 991.1, from 2013 to 2016, produces 560 hp and 750 Nm; the 991.2, from 2017 to 2019, rises to 580 hp. The response remains surprisingly sharp for a forced-induction engine, and the thrust does not fade until the rev limiter.
From one phase to the next, the engine evolves but keeps its architecture and position, hence a shared Rog exhaust. The turbos already dampen the sound, and the factory exhaust finishes smoothing everything out, so that the car feels hushed even at full load. The Rog exhaust replaces it with a lighter system that you control, without touching the engine or the ECU, and gives the flat-six back its raspy grain.
What makes up the exhaust on your Porsche 911 Turbo S type 991.1 or 911 Turbo S type 991.2
An exhaust system is best understood in two parts. Here is what each one does, and what Rog replaces.
The cat-back is the complete exhaust system
It is everything you can see under your Porsche 911 Turbo S type 991.1 or 911 Turbo S type 991.2, from the outlet of the front section to the tips: pipes, muffler, valves. This is where our research and development is focused, and it is what shapes the sound. On its own, it changes the character of the car.
The front section, where the catalytic converter sits
On your Porsche 911 Turbo S type 991.1 or 911 Turbo S type 991.2, it is the downpipe, the pipe leading from the turbo. It contains the factory catalytic converter: the second restriction in the exhaust, after the muffler. Replacing this part is optional: it frees up the flow, and an ECU remap is what turns that into power.
Your Porsche 911 Turbo S type 991.1 or 911 Turbo S type 991.2 in figures
On a modern car, an exhaust system first changes the voice, the breathing and the weight at the rear. Power, on the other hand, comes from an ECU remap.
Porsche 911 Turbo S type 991.1
Power
Torque
Porsche 911 Turbo S type 991.2
Power
Torque
Published factory and Stage 2 figures.
Our exhaust systems work perfectly with or without an ECU remap. On your Porsche 911 Turbo S type 991.1 or 911 Turbo S type 991.2, however, we recommend having it done at an approved tuning center: it is what lets the engine reach its full potential.
With its two variable-geometry turbos, the Turbo S's flat-six keeps a significant reserve: at Stage 2, the 991.1 is quoted at 630 hp and the 991.2 at 672 hp, with 840 Nm in both cases. On an engine of this caliber, choosing a specialist tuner is decisive. The Rog exhaust, for its part, is dedicated to the voice.
Configuring your exhaust, step by step
4 choices, in the same order as the product page configurator.
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Step 1 of 4: Material: stainless steel or titanium
Titanium costs more than stainless steel; the price of each version is shown on the product page, in your currency.
304 stainless steel
- Weight
- Baseline
- Sound
- Full and rounded
The benchmark for high-end exhausts: tough, corrosion-proof, with a full, rounded sound. The choice of most of our customers.
Titanium
- Weight
- Around 40% lighter
- Sound
- Metallic, crystal-clear
Around 40% lighter than stainless steel for the same design, with a more metallic sound that turns crystal-clear at high revs. Its finish ranges from brushed to blued tints.
Over time, both hold up: 304 stainless steel stands up to winter salt and damp, and titanium does not rust. Stainless steel or titanium: what really changes.
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Step 2 of 4: Front section: downpipe and catalytic converter
Optional: the downpipe on your Porsche 911 Turbo S type 991.1 or 911 Turbo S type 991.2, with its catalytic converter. Sound intensity is rated on our scale of 0 to 10, valves open; the factory exhaust scores 3.
Option available for the Porsche 911 Turbo S type 991.2; the Porsche 911 Turbo S type 991.1 is sold as a cat-back only.
Cat-back only
Included
7/10Factory emissions control
The factory catalytic converter stays in place. The starting point and, for many of our customers, more than enough.
200-cell sports catalytic converter
8/10Road use and inspection
Emissions control is still very much there, and flow improves noticeably. The choice for everyday driving.
100-cell sports catalytic converter
9/10Inspection: depends on local rules
Half as many cells: flow comes close to a decat and the sound gains real aggression at high revs.
Decat
10/10Track use
No emissions control: maximum flow, raw sound, the sharpest revving.
Sound intensity, on a scale of 0 to 10
- 10/10Decat downpipe + Rog cat-back
- 9/10100-cell sports catalytic converter + Rog cat-back
- 8/10200-cell sports catalytic converter + Rog cat-back
- 7/10Rog cat-back only, factory catalytic converter retained
- 3/10Factory exhaust, for comparison
Valves open. With the valves closed, every configuration becomes discreet again.
What about the engine warning light? With a sports cat, it can come on with some engines: the sensor placed after the catalytic converter measures a different level of emissions control from the original. It is not a mechanical failure, but a warning light should never be masked or cleared without dealing with its cause: the right answer is a catalytic converter suited to the engine, with a map by a tuner who takes it into account. The decat version, for track use only, almost always triggers it. If this happens to you, write to us and we will point you in the right direction. Passing vehicle inspection with a sports exhaust.
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Step 3 of 4: Valves: Rog remote or factory control
Two ways to control the valves on your Porsche 911 Turbo S type 991.1 or 911 Turbo S type 991.2.
Rog remote
A small control unit fits in the trunk. Two buttons, open and closed: the valves respond at any moment, whatever the drive mode. Simple to fit, and we stay on hand throughout the installation.
Factory control
- Only for vehicles fitted with factory valves
- Controlled by the drive modes
If your vehicle is fitted with factory valves, the exhaust keeps their existing control. The drive modes decide, just as they did from the factory, with no added electronics.
On the highway, with the valves closed, the gases pass through the muffler, designed for cruising: no drone at a steady speed. You open up when you feel like it, not when the highway decides for you. More about exhaust drone.
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Step 4 of 4: Tips: the visual signature
Match the tips to the style of your Porsche 911 Turbo S type 991.1 or 911 Turbo S type 991.2, understated or bold. A particular finish in mind? Send us a photo and we will look at it together.
- Chrome
- Gloss black
- Blued titanium
The Rog sound signature on the 911 Turbo S's biturbo flat-six
Beneath its two turbos, the flat-six keeps an inimitable accent: a raspy rumble with a slightly limping rhythm, mixed with the rush of boost under load. On the standard 991.1 and 991.2, this accent stays locked away, and the Turbo S delivers its acceleration in an almost unsettling calm.
With the valves open, the Rog exhaust brings the flat-six into the cabin: an assertive start-up, acceleration where you can finally follow the engine climbing, and more expressive lift-offs. With the valves closed, the 911 Turbo S returns to its role as a refined grand tourer, eating up long distances.
From order to fitting
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Configuration
You choose your exhaust and enter your VIN, found in box E of your registration document or at the base of the windshield.
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Check
We check compatibility with your VIN before manufacturing begins.
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Manufacturing
Your exhaust is made to order, for your car.
-
Delivery
Free, insured to your door, tracked from dispatch.
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Fitting
No welding or cutting: clamps and gaskets, around two hours on a lift.
20 working days from order confirmation to delivery
- Warranty
- 3 years, parts and workmanship, from the date of purchase
- Payment
- Card, PayPal or bank transfer
- Installation
- At the garage of your choice
What about the manufacturer's warranty on your Porsche 911 Turbo S type 991.1 or 911 Turbo S type 991.2? In Europe, a manufacturer cannot refuse warranty cover simply because a part from another brand has been fitted: it has to prove that the fault comes from that part. Our article on the manufacturer's warranty.
Our recommendations for your Porsche 911 Turbo S type 991.1 or 911 Turbo S type 991.2
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Daily driving
- Stainless
- Cat-back only
- Rog remote
Your Porsche 911 Turbo S type 991.1 or 911 Turbo S type 991.2 stays easy to live with, the factory emissions control is retained, and you open the valves whenever you decide.
View this configuration -
Fast road
- Titanium
- 200-cell downpipe
- ECU remap
More sound, more breathing, and a car you can still present at vehicle inspection.
View this configuration -
Track
- Titanium
- Decat downpipe
- Stage 2
The most extreme configuration, for track use only.
View this configuration
And if you are still unsure, that is perfectly normal: it is exactly why we answer every message.
Porsche 911 Turbo S type 991.1 or 911 Turbo S type 991.2: your questions
How much power does an exhaust add on the Porsche 911 Turbo S type 991.1 or 911 Turbo S type 991.2?
As standard, the Porsche 911 Turbo S type 991.1 produces 560 hp; the Porsche 911 Turbo S type 991.2 produces 580 hp. An exhaust system on its own mainly changes the sound, the breathing and the weight; power is gained with an ECU remap. The published Stage 2 figures for each model are shown in the figures table.
Stainless steel or titanium: which material for the Porsche 911 Turbo S type 991.1 or 911 Turbo S type 991.2?
The Rog exhaust comes in stainless steel and titanium, at the price shown on the product page in your currency. 304 stainless steel is tough, rounded in tone and the most popular choice; titanium is around 40% lighter for the same design, with a more metallic sound at high revs.
Do you need to replace the catalytic converter on the Porsche 911 Turbo S type 991.1 or 911 Turbo S type 991.2?
No. On the Porsche 911 Turbo S type 991.1 or 911 Turbo S type 991.2, the cat-back alone carries the valves and already transforms the sound. Replacing the downpipe is an option for going further: with a 200-cell sports catalytic converter for the road, 100-cell or decat for more radical use, with an ECU remap to turn it into power.
Will a Rog exhaust pass vehicle inspection on the Porsche 911 Turbo S type 991.1 or 911 Turbo S type 991.2?
With the cat-back only or the 200-cell sports catalytic converter, emissions control is retained: present the car with the valves closed. The 100-cell brings more sound and flow, and whether it is accepted at the emissions test depends on the car and local rules; the decat version is intended for track use.
How is the Rog exhaust fitted on the Porsche 911 Turbo S type 991.1 or 911 Turbo S type 991.2?
No welding or cutting, using clamps and gaskets. Allow two hours on average for a well-equipped mechanic. The exhaust is built for your VIN, which guarantees compatibility before it ships.
What price and lead time for a Rog exhaust on the Porsche 911 Turbo S type 991.1 or 911 Turbo S type 991.2?
The price depends on the configuration and is shown on the product page, in your currency. Allow 20 working days from order confirmation to delivery. Free delivery and a 3-year warranty.
Unsure about your configuration? Write to us.
Stainless steel or titanium, cat-back only or the complete system: the right choice depends on how you drive and on your Porsche 911 Turbo S type 991.1 or 911 Turbo S type 991.2. We take the time to talk it through before you order, with a reply within 24 hours. We are not here to push a sale: we help you choose, even if that means a cheaper option because it suits the way you drive. Write to us: we reply in writing, in English.
RogMotorsport is a French brand built on one conviction: with an exhaust system, the support matters as much as the product. More than 500 exhaust systems fitted and a rating of 4.9 out of 5.
Further reading
- All Porsche exhaust systems
- Porsche 911 Carrera 3.4 / 3.8 type 991.1
- Porsche 718 Boxster / Cayman 2.0 turbo type 982
- Porsche 718 Boxster / Cayman GTS 2.5 turbo type 982
- Stage 2: the role of the downpipe
- How to pass vehicle inspection with a modified exhaust
- Pop & Bang: how it works, and is it risky?
- The 28 brands we cover
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