Valved Exhaust System for Maserati GranTurismo / GranCabrio V8 4.7 (2008-2016)
Configuration
Maserati GranTurismo / GranCabrio V8 4.7 Valved Exhaust System (2008-2016)
Valves
Operated by remote control, factory-paired.
Estimated at 0.50 m from the outlet, 45°, 2,000 rpm with a warm engine. Allow ± 2 dB depending on the engine and measuring point. A 3 dB difference is audible in a direct comparison; 10 dB sounds roughly twice as loud.
Configuration guide
Sound intensity with the valves open, on a scale of 0 to 10.
| Configuration | Intensity |
|---|---|
| Decat front pipes + Rog cat-back | 10/10 |
| 100-cell sports catalytic converter + Rog cat-back | 9/10 |
| 200-cell sports catalytic converter + Rog cat-back | 8/10 |
| Rog cat-back only, factory catalytic converter retained | 7/10 |
| Factory exhaust, for comparison | 3/10 |
MaseratiGranTurismo / GranCabrio M145
The Maserati GranTurismo / GranCabrio V8 4.7 exhaust in detail.
The GranTurismo 4.7’s V8 comes off the Maranello lines: a naturally aspirated 4.7-litre Ferrari-sourced engine, 440 hp and 490 Nm between 2008 and 2016, whose sound is regularly cited among the finest in the world. Maserati has always made the voice a selling point, but even here, regulations impose their filters, and the upper register remains locked away.
A brassy, hoarse tone, presence from idle, a howl at high revs: with the valves open, the valved Rog cat-back brings out this V8 in full, with classy bangs on lift-off. With the valves closed, cruising refinement takes over again. The page covers the GranTurismo V8 4.7 coupé and the GranCabrio V8 4.7; the 4.2 and the V6 have their own pages, and your VIN is checked before manufacturing.
With no welding, using clamps and gaskets, installation takes about two hours, and the factory valve control is retained if the car has one; otherwise, the Rog remote, whose box sits in the boot, takes over.
Under the “Manifold” option, the page replaces the front section that houses the 4.7-litre’s catalytic converters. Combined with an ECU remap, it brings a real but modest gain, as on any naturally aspirated engine; on its own, it mainly changes the voice. A 4.7 fitted with the 200-cell version keeps its emissions control, the 100-cell will be accepted or not depending on the vehicle and your country’s rules, and the decat version is reserved for track use, far from the car’s grand touring role. The 4.7’s four round tailpipes stay where they are; only their material changes, 304 stainless steel with its warm grain or titanium, around 40% lighter, in brushed, gold or purple.
Maserati GranTurismo / GranCabrio V8 4.7 exhaust specifications.
| System type | Valved cat-back (valve exhaust), built to your VIN |
|---|---|
| Vehicles | Maserati GranTurismo coupé and GranCabrio V8 4.7 |
| Engine | 4.7-litre naturally aspirated V8 of Ferrari origin, 440 hp and 490 Nm |
| Years | 2008-2016 |
| Materials and finishes | 304 stainless steel or titanium; titanium in brushed, gold or purple |
| Valves | Factory valve control if the car has it, otherwise the Rog remote |
| Front section (option) | Front section with 200-cell or 100-cell catalytic converter, or decat (“Manifold” option on this page) |
| Fitting | Clamps and gaskets, no welding, about 2 hours |
| Manufacturing and delivery | Made to order, 20 working days, free delivery |
| Warranty | 3 years, parts and workmanship |
Questions about the Maserati GranTurismo / GranCabrio V8 4.7 exhaust.
Is the GranCabrio V8 4.7, the open-top cousin of the GranTurismo, covered?
Yes. The GranTurismo coupé and the GranCabrio V8 4.7 take the same Rog system: same chassis, same 4.7-litre V8, same clamp-and-gasket fitting. Your VIN is only used to confirm the version and model year before manufacturing.
On the GranTurismo V8 4.7, is an ECU remap essential?
Not with the cat-back alone, which leaves the factory map in place. With the front section, an ECU remap brings a modest gain, in keeping with a naturally aspirated engine; the voice, however, changes from the cat-back onwards.
GranTurismo V8 4.7 fitted with the system: how should I take it to the vehicle inspection?
With the valves closed, to regain cruising refinement, and with the factory or 200-cell front section, for catalytic converters in service. The 100-cell will be accepted or not depending on the car and your country; the decat version is reserved for the circuit.
Crossing Europe, does a modified GranTurismo V8 4.7 stay comfortable?
Yes: with the valves closed, it covers long stages without droning. The Maranello V8 only finds its voice when you open them, via the factory control or the Rog remote.
Maserati GranTurismo / GranCabrio V8 4.7: straight pipe or resonator?
On this model, two characters at the same price: the straight pipe for the raw sound of your engine, unfiltered, or the resonator for a rounder and slightly softer voice. Either way, the exhaust stays fully sporty. Learn more: Exhaust resonator: what does it do? Straight pipe or resonator, which sound to choose.
Rog expert guide
Maserati GranTurismo V8: the most beautiful voice in the world, set free. The complete guide
The GranTurismo V8 is famous for one thing above all else: its sound, regularly ranked among the most beautiful in the world. Its Ferrari-assembled V8 still has a register that the factory exhaust does not deliver, and that is exactly...
In detail
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Fitment, sound, catalyst, valves, delivery: the answer comes straight away, with your configuration in context.
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Rog presentation film: choosing your vehicle, Standard or Equal Length design, stainless steel or titanium, Z-Pipe, controlled valves, titanium and tip finishes, and support from choosing your configuration through to shipping.
THE Rog CRAFT
Our process.
From the first bend to the last check. The same care at every step.
-
Design
Designed for your vehicle.
Geometry matched to your model, carefully studied bends and precise mounting points. Everything starts with accurate design.
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Manufacture
Crafted with precision.
Tube bending, part fitting and TIG welding: every joint receives the same care.
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Finishing
Material, elevated.
The finish reveals the character of the metal. Stainless steel or titanium, depending on the options available for your vehicle.
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Assembly
Every part in its place.
Components are assembled and adjusted. On valved systems, the mechanism is fitted, set up and tested.
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Inspection
Check. Then approve.
Geometry, welds, connections and gas flow: the key points are inspected before shipping.
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Shipping
Ready to join you.
Reinforced packaging protects your exhaust in transit. The final step before giving your vehicle a new voice.
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