Guides Maserati GranTurismo / GranCabrio M145
Maserati GranTurismo V8: the song of the Italian V8, the exhaust system guide
The GranTurismo is Maserati's large four-seat coupé, styled by Pininfarina to combine elegance with long-distance comfort. Under its hood, a 4.2-liter naturally aspirated V8 built by Ferrari produces 405 hp and 460 Nm, which it only delivers as it climbs through the revs. That is precisely where the factory exhaust muffles it the most. Choosing the material, valves and fitting: that is what this guide is about, to give this Italian V8 back the voice you expect from it.
Your valved exhaust for Maserati GranTurismo V8 is configured from your VIN, and the Maserati GranTurismo / GranCabrio M145 Valved Exhaust page brings together every system we make for this generation.
Valved Exhaust System for Maserati GranTurismo V8 4.2 (2008-2014)From $2,930 · free delivery · 20 working days
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Your Rog exhaust for the Maserati GranTurismo V8
Price shown on the product page, in your currency
Configure my exhaustThe short answer.
- Vehicles
- Maserati GranTurismo V8 4.2 (2008-2014)
- Engine
- 405 hp · 460 Nm
- Exhaust
- Valved cat-back, built for your VIN
- Material
- 304 stainless steel or titanium
- Front section
- Optional: catted front pipes 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: Maserati GranTurismo V8 4.7, Maserati Granturismo V6.
The 4.2-liter V8: the Italian heart of the GranTurismo
The GranTurismo 4.2 gets a 4.2-liter naturally aspirated V8 built by Ferrari. It produces 405 hp and 460 Nm. Unlike modern turbocharged V8s, it does not deliver its torque all at once: you have to go and find it by climbing through the revs, where it reveals its full temperament. On a GT of this size, that makes for driving that is both smooth in town and engaging as soon as the road opens up.
On a naturally aspirated engine, the exhaust affects both breathing and the pleasure of the sound. The GranTurismo's factory exhaust, designed for grand touring, holds back precisely what makes the V8 so charming at high revs. Fitted in place of the original without modifying the engine, the Rog valved exhaust puts you back in control: with the valves open, the V8 speaks out in full; with the valves closed, the GranTurismo keeps its hushed elegance.
What makes up the exhaust on your Maserati GranTurismo V8
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 Maserati GranTurismo V8, 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 Maserati GranTurismo V8, it is the front pipes, just after the manifolds. They contain 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 Maserati GranTurismo V8 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.
Power
Torque
Published manufacturer and Stage 2 figures.
Our exhaust systems work perfectly with or without an ECU remap. On your Maserati GranTurismo V8, however, we recommend having it done at an approved tuning center: it is what lets the engine reach its full potential.
Remapping a naturally aspirated V8 like the GranTurismo's mainly brings a little more liveliness and top-end reach, with more limited gains than on a turbocharged engine. In this context, the Rog exhaust is the most noticeable complement to a light tune: it changes how the engine makes itself heard every time the revs rise.
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: front pipes and catalytic converter
Optional: the front pipes on your Maserati GranTurismo V8, with their catalytic converter. Sound intensity is rated on our scale of 0 to 10, valves open; the factory exhaust scores 3.
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 front pipes + 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 Maserati GranTurismo V8.
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 Maserati GranTurismo V8, understated or bold. A particular finish in mind? Send us a photo and we will look at it together.
- Chrome
- Gloss black
- Blued titanium
Your choices carry over to the product page: only the finishes, your VIN and the cart remain.
The Rog sound signature on the GranTurismo's V8
The GranTurismo's V8 has a voice that is both deep and singing, very Italian, moving from a round rumble at idle to a more piercing note at the top of the rev counter. The factory exhaust keeps a trace of it, but it softens the climb through the revs and makes the engine sound further away than it should.
With the Rog exhaust and the valves open, this song comes through in full, especially in tunnels and when you get back on the throttle out of a corner. With the valves closed, the GranTurismo remains a comfortable grand tourer, able to cover mile after mile without tiring its passengers.
From order to fitting
-
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.
-
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 Maserati GranTurismo V8? 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 Maserati GranTurismo V8
-
Daily driving
- Stainless
- Cat-back only
- Rog remote
Your Maserati GranTurismo V8 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 front pipes
- ECU remap
More sound, more breathing, and a car you can still present at vehicle inspection.
View this configuration -
Track
- Titanium
- Decat front pipes
- 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.
Maserati GranTurismo V8: your questions
How much power does an exhaust add on the Maserati GranTurismo V8?
As standard, the Maserati GranTurismo V8 produces 405 hp and 460 Nm. An exhaust system on its own mainly changes the sound, the breathing and the weight; power is gained with an ECU remap. With a Stage 2 build, the published figures reach 454 hp and 520 Nm.
Stainless steel or titanium: which material for the Maserati GranTurismo V8?
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 Maserati GranTurismo V8?
No. On the Maserati GranTurismo V8, the cat-back alone carries the valves and already transforms the sound. Replacing the front pipes 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 Maserati GranTurismo V8?
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 Maserati GranTurismo V8?
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 Maserati GranTurismo V8?
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.
Valved Exhaust System for Maserati GranTurismo V8 4.2 (2008-2014)
From $2,930 · 3-year warranty
Configure my exhaustUnsure 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 Maserati GranTurismo V8. 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
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