Porsche
911 GT3 RS 992 · 2023 – present
Hold the 9,000 RPM flat-six wide open through every gear, every drive mode, every time.
- Specifically calibrated for the 992 GT3 RS valve hardware
- No interference with PCCB, PASM or PDK logic
- Compatible with factory and PSE exhausts
- Discreet install behind the engine cover trim
Free UK shipping
2-year warranty
Fully reversible
The honest pitch
What this actually does to your 911 GT3 RS
On a GT3 RS the exhaust valves are part of the show. They're also closed more often than Porsche's marketing materials suggest, particularly below 4,500 RPM where the car spends a surprising amount of road-driving time.
This module isn't a louder muffler or a louder cat-back. It's the smallest possible change you can make to the way your RS sounds — a single signal change that locks the flaps open. Original parts, original tone, just unleashed.
Fitment
Porsche 911 GT3 RS 992
Years
2023 – present
Install time
~10 minutes
Tools needed
None
Long read
The Porsche 911 GT3 RS valve story
The 992 GT3 RS is the loudest naturally-aspirated production Porsche of the modern era and even it has a quiet mode. The factory exhaust valves are part of the show — they open in Sport, sometimes in Normal at higher load — but below about 4,500 RPM on light throttle, they spend a lot of their life shut. That's the difference between the 992 RS sounding like the car you saw at the launch event and the 992 RS sounding like a moderately enthusiastic 911 Carrera.
Open Valve pins the rear valves open. The 9,000-RPM flat-six sings the way it does at full chat, in every gear, at every throttle position, in every mode. The induction roar in the cabin doesn't change (that's an intake characteristic, not exhaust), but the bark from the rear bumper is the unfiltered version of what you bought.
We calibrate the 992 GT3 RS module specifically for the OPF-equipped European/UK car. Rest-of-world cars without OPF use a slightly different actuator commit timing and we ship those a different firmware (no extra cost — pick the right one at checkout).
Install on a GT3 RS is more delicate than the saloons because of the engine cover trim panels. We recommend a Porsche specialist do it the first time if you don't have access to a four-poster. The connectors and module bodies sit behind the lower engine bay trim; reaching them comfortably means dropping the rear undertray and the lower engine cover.
PSE-equipped cars work the same way — the Porsche Sport Exhaust option uses the same actuator pinout and the same connector type.
Install — step by step
- 01
Raise the car to a comfortable working height. Engine cool, ignition off.
- 02
Remove the rear undertray (eight T30 torx) and lower it onto a creeper.
- 03
Remove the lower engine cover panel (six T25 torx). You now have visual access to the two rear valve actuators.
- 04
Disconnect each 2-pin valve actuator connector. Inline-plug each module.
- 05
Mount module bodies to the chassis rail using supplied heat-rated mounting (away from the engine block — the rear engine bay gets very hot).
- 06
Refit lower engine cover, refit undertray.
- 07
Pair fob with both modules simultaneously — press and hold both buttons until both LEDs double-blink.
In the box
- Two valve override modules (one per actuator)
- Two-button RF key fob (CR2032 pre-installed, spare in the box)
- OEM-pattern connectors — no cutting, no splicing, no scotch-locks
- Printed install card with model-specific photos and a workshop QR link
Fitment notes
- ·992 GT3 RS — both UK/EU OPF and rest-of-world non-OPF versions supported (different firmware).
- ·Compatible with Porsche Sport Exhaust (PSE) and OEM cup exhaust.
- ·Aftermarket cup/track exhausts without valves are not applicable.
Porsche 911 GT3 RS — FAQ
Does it work with the Weissach pack?+
Yes. The Weissach pack is suspension/structural/aero — it doesn't touch the exhaust valve hardware. Same kit, same install.
What about the optional PSE (Porsche Sport Exhaust)?+
PSE cars are supported — same module, same install. The PSE option uses the same valve actuator type and connector, just with a different silencer construction.
Will it throw a warning light on the dash?+
No. The module sits in the signal path between the ECU and the actuator motor. The ECU sees a normal actuator response back, so there's nothing to flag. We've shipped thousands of these and not had a single check-engine call linked to the module itself.
Is it reversible?+
Yes, fully. Unplug the module, plug the OEM connectors back into each other, refit the trim — about three minutes' work. There's no permanent change to the car, no part cut, nothing in the ECU. Dealer service visits, MOT, sale to a new owner — pull it out and it's like it was never fitted.
Does it work with an aftermarket exhaust?+
If the aftermarket back-box retains the OEM-pattern valve actuators (most do — Akrapovic, Milltek, IPE, Capristo all run the factory motors), yes. If the system is a straight-through with no valves, there's nothing for the module to override.
Is there any risk of damaging the catalysts or OPF?+
No. The OPF and cats sit upstream of the rear valves and are unaffected by valve position. Back-pressure to those components changes by a fraction during high-load operation, well within tolerance.
Will Porsche dealer diagnostics show anything?+
No. The module is electrically transparent. No fault codes, no logged events. Service work that requires the exhaust to be removed is unaffected — pull the module connectors apart, do the work, plug back together.
Disclaimer
Open Valve modules are intended for off-road and motorsport use only. Please confirm your car has factory valve-actuated exhaust before ordering — if you're not sure, message us first. Professional installation recommended. Use at your own risk.
