Kies Valve Controller for Porsche 991.2/992 GT3, GT3 RS & 982 Boxster/Cayman
Unleash the True Sound of Your Porsche Performance Machine
Experience the raw, unfiltered exhaust note your Porsche GT3, GT3 RS, Boxster, or Cayman was engineered to produce. The all-new Kies Valve Controller gives you complete command over your exhaust valve system across multiple high-performance Porsche platforms, from the track-focused GT3 to the agile mid-engine Boxster and Cayman lineup.
Why Choose the Kies GT3/Boxster/Cayman Valve Controller?
Overcome Factory Sound Restrictions
Porsche's factory exhaust valve system includes built-in sound management for emissions and noise compliance. Even when you select "valves open" mode, the system automatically restricts valve opening at idle and lower RPMs. This limitation prevents you from experiencing the full sonic potential of your naturally aspirated flat-six or turbocharged four-cylinder engine.
Unlock Full Valve Control
The Kies Valve Controller eliminates factory restrictions, allowing you to fully open the exhaust valves whenever you choose. Experience enhanced exhaust flow, track-inspired sound quality, and the aggressive note your GT3, Boxster, or Cayman deserves—especially transformative for vehicles equipped with Porsche Sport Exhaust (PSE) or aftermarket exhaust systems.
Wireless Remote Operation
Our premium wireless remote features intuitive two-button operation tailored for performance driving. Button 1 activates full valve opening for maximum sound and track-ready exhaust flow, while Button 2 instantly reverts to factory valve configuration for civilized street driving. Switch seamlessly between modes at any time.
Engineered for Performance Models
Unlike generic valve controllers, the Kies system is specifically engineered for the unique exhaust valve architecture found in Porsche's GT3, GT3 RS, GT3 Touring, 992.2 GTS, and mid-engine 982 Boxster and Cayman models. This specialized design ensures perfect compatibility and reliable operation.
Safety-First Engineering
The Kies Valve Controller employs intelligent safety mechanisms that prevent valves from remaining fully closed continuously. This design protects against excessive exhaust back-pressure that could damage your high-performance engine while maximizing sound and flow when you want it.
Premium Quality & Comprehensive Warranty
Built to withstand the demands of track use and spirited driving, every Kies Valve Controller includes a comprehensive 3-year warranty covering manufacturing defects from the date of purchase. Your investment is protected by our confidence in quality and reliability.
Complete Porsche Compatibility Guide
Compatible 991.2 911 Models (2017-2019):
- Porsche 991.2 GT3 (2017-2019)
- Porsche 991.2 GT3 RS (2017-2019)
- Porsche 991.2 GT3 Touring (2017-2019)
Compatible 992 911 Models (2021+):
- Porsche 992.1 GT3 (2021-2024)
- Porsche 992.1 GT3 Touring (2021-2024)
- Porsche 992.1 GT3 RS (2022-2024)
- Porsche 992.2 GT3 (2024+)
- Porsche 992.2 GT3 Touring (2024+)
- Porsche 992.2 GT3 RS (2024+)
- Porsche 992.2 GTS (2024+) - All variants
Compatible 982 Boxster Models (2016-2023):
- Porsche 982 Boxster (2016-2023)
- Porsche 982 Boxster S (2016-2023)
- Porsche 982 Boxster GTS (2017-2023)
- Porsche 982 Boxster GTS 4.0 (2020-2023)
- Porsche 718 Boxster (2016-2023)
- Porsche 718 Boxster S (2016-2023)
- Porsche 718 Boxster GTS (2017-2023)
- Porsche 718 Boxster GTS 4.0 (2020-2023)
Compatible 982 Cayman Models (2016-2023):
- Porsche 982 Cayman (2016-2023)
- Porsche 982 Cayman S (2016-2023)
- Porsche 982 Cayman GTS (2017-2023)
- Porsche 982 Cayman GTS 4.0 (2020-2023)
- Porsche 982 Cayman GT4 (2019-2023)
- Porsche 982 Cayman GT4 RS (2023)
- Porsche 982 Cayman Spyder (2019-2023)
- Porsche 718 Cayman (2016-2023)
- Porsche 718 Cayman S (2016-2023)
- Porsche 718 Cayman GTS (2017-2023)
- Porsche 718 Cayman GTS 4.0 (2020-2023)
- Porsche 718 Cayman GT4 (2019-2023)
- Porsche 718 Cayman GT4 RS (2023)
- Porsche 718 Spyder (2019-2023)
NOT Compatible With:
- Porsche 992 Carrera (all variants) - Use the 992 Carrera/Turbo controller instead
- Porsche 992 Turbo (all variants) - Use the 992 Carrera/Turbo controller instead
- Porsche 991.1 GT3/GT3 RS (2013-2016)
- Porsche 981 Boxster/Cayman (2012-2016)
- Porsche 997 GT3/GT3 RS
Important: Please carefully verify your specific model and year when ordering. This controller is specifically engineered for GT3, GT3 RS, GT3 Touring, 992.2 GTS, and 982-generation mid-engine models. For 992 Carrera or Turbo models, Kies offers a separate controller designed for those vehicles.
Technical Specifications
| Product Name: | Kies Valve Controller for GT3, Boxster & Cayman |
| Vehicle Application: | 991.2/992 GT3/GT3 RS/GT3 Touring, 992.2 GTS, 982 Boxster/Cayman (all variants) |
| Control Type: | Wireless Remote (2-Button Operation) |
| Installation Type: | Plug-and-Play with OEM-Style Connectors |
| Installation Time: | 45-90 minutes (basic tools required) |
| Warranty Period: | 3 Years (Manufacturing Defects) |
| Material: | High-Grade Electronics with Weather-Resistant Housing |
| PSE Compatible: | Yes (Porsche Sport Exhaust) |
| Track Use: | Fully Compatible |
| Made By: | Kies Motorsports |
Installation Process
The Kies GT3/Boxster/Cayman Valve Controller is designed for straightforward installation. Most enthusiasts with basic mechanical skills can complete the installation at home, though professional installation is available at authorized dealers and performance shops.
What's Included:
- Kies Valve Controller Module
- Wireless Remote Control
- OEM-Style Wiring Harness with Connectors
- Detailed Model-Specific Installation Instructions
- Mounting Hardware
- 3-Year Warranty Card
Installation Overview:
- Prepare Vehicle: Safely raise and secure vehicle on jack stands or lift for access to exhaust components
- Locate Valve Actuators: Find exhaust valve actuators (location varies by model - GT3 rear-mounted, Boxster/Cayman side-mounted)
- Disconnect Factory Connectors: Carefully unplug OEM connectors from valve actuators
- Connect Kies Controller: Install Kies module between factory harness and valve actuators using supplied connectors
- Mount Controller Module: Secure controller in protected location using provided mounting hardware
- Pair Wireless Remote: Follow simple pairing procedure to sync remote with controller
- Test Operation: Start vehicle and verify both button functions work correctly at idle and while driving
- Final Check: Ensure all connections are secure and properly routed away from heat sources
Model-Specific Notes: Installation difficulty and actuator location vary by model. GT3 models typically require rear bumper removal for access. Boxster and Cayman models have side-mounted actuators accessible from underneath. Detailed model-specific instructions are included with every kit.
Professional Installation: For owners who prefer professional installation, the Kies Controller can be installed at authorized Kies Motorsports dealers, Porsche specialty shops, and performance exhaust shops nationwide. Installation typically takes 1-1.5 hours.
Benefits of the Kies Valve Controller
Unleash Race-Inspired Sound
Experience the true, unfiltered exhaust note your GT3, Boxster, or Cayman was engineered to produce on the track. Fully open valves deliver the raw, mechanical symphony of Porsche's naturally aspirated flat-six engines at all RPM ranges.
Enhanced Throttle Response
Reduced exhaust restriction from fully opened valves contributes to improved throttle response and enhanced engine breathing, particularly beneficial during spirited driving and track sessions.
Instant Mode Switching
Switch instantly between track-mode aggression and street-friendly civility with the wireless remote. Perfect for early morning canyon runs, residential neighborhoods, or when discretion is preferred.
Maximize PSE Investment
If your GT3, Boxster, or Cayman is equipped with Porsche Sport Exhaust, the Kies Controller ensures you're extracting 100% of the system's sound and performance potential that factory programming restricts.
Perfect for Aftermarket Exhausts
If you've invested in an aftermarket exhaust system from Akrapovic, Milltek, Fabspeed, or other premium brands, the Kies Controller maximizes your investment by ensuring valves remain fully open during performance driving.
Reversible Installation
No permanent modifications required. The controller can be completely removed and your Porsche returned to factory configuration if desired, preserving resale value and factory warranty considerations.
Track-Day Ready
Engineered to withstand the demands of track use, the Kies Controller performs flawlessly during extended high-RPM operation, multiple heat cycles, and demanding driving conditions.
Preserve Resale Value
Unlike cutting factory wiring or installing permanent exhaust modifications, the valve controller is completely reversible and doesn't alter factory components, helping preserve your vehicle's value.
How the Kies Valve Controller Works
Understanding your Porsche's factory valve system helps appreciate the transformation the Kies Controller provides for GT3 and mid-engine models.
Factory Valve Operation in GT3/Boxster/Cayman Models:
Porsche's factory electronic valve system uses electric actuators to control butterfly valves in the exhaust system. Even in "Sport" or "Sport Plus" modes with valves commanded "open," the factory ECU restricts valve opening during idle and low-RPM operation for noise compliance, emissions regulations, and neighborhood-friendly operation. While this makes sense for daily driving, it prevents you from experiencing the full sonic potential of your high-performance engine.
Kies Controller Enhancement:
The Kies Valve Controller intercepts the signal between your car's ECU and the valve actuators. When you activate Button 1 on the wireless remote, the controller overrides the factory signal and commands the valves to remain fully open regardless of RPM, throttle position, or drive mode selected. This delivers unfiltered exhaust sound at idle, creating the distinctive lopey idle character and raw exhaust note associated with race-spec GT3s and track-prepared mid-engine Porsches. Button 2 passes the factory signal through unchanged, restoring original valve behavior for civilized street driving.
GT3-Specific Considerations:
GT3 models feature unique exhaust valve positioning and control logic compared to Carrera models. The Kies Controller is specifically calibrated for the GT3's naturally aspirated engine characteristics, ensuring proper valve operation across the 9,000 RPM redline without any risk of back-pressure issues.
Boxster/Cayman Mid-Engine Architecture:
The mid-engine layout of 982 Boxster and Cayman models places exhaust components in unique positions compared to rear-engine 911s. The Kies Controller accommodates these differences with model-specific wiring harness lengths and mounting provisions for optimal installation in the tighter confines of the mid-engine chassis.
Safety Mechanisms:
The Kies Controller includes intelligent safety programming that prevents valves from being commanded fully closed continuously. This safety feature protects against excessive exhaust back-pressure that could damage your high-performance engine, particularly during sustained high-RPM track use.
Frequently Asked Questions
Which Porsche models is the Kies GT3/Boxster/Cayman Valve Controller compatible with?
The Kies Valve Controller is compatible with 991.2 GT3/GT3 RS/GT3 Touring (2017-2019), 992.1/992.2 GT3/GT3 RS/GT3 Touring (2021+), 992.2 GTS (2024+), and all 982/718 Boxster and Cayman variants including base models, S models, GTS, GTS 4.0, GT4, GT4 RS, and Spyder (2016-2023). It does NOT work with 992 Carrera or Turbo models.
How does the Kies Valve Controller improve my GT3 or Boxster exhaust sound?
From the factory, GT3, Boxster, and Cayman models partially close exhaust valves at idle and low RPMs for noise compliance, even when set to 'open.' The Kies Valve Controller allows you to fully open the valves at all times, delivering the raw, unfiltered sound of your naturally aspirated flat-six or turbocharged four-cylinder engine. This creates the characteristic aggressive idle and race-inspired exhaust note at all RPM ranges.
Is installation difficult for the Kies GT3/Boxster Valve Controller?
Installation difficulty varies by model. GT3 models typically require rear bumper removal for access to valve actuators, taking 60-90 minutes. Boxster and Cayman models have side-mounted actuators accessible from underneath, typically taking 45-60 minutes. All installations use plug-and-play OEM-style connectors with no cutting or splicing required. Detailed model-specific instructions are included.
What warranty comes with the Kies GT3/Boxster Valve Controller?
The Kies Valve Controller includes a comprehensive 3-year warranty covering all manufacturing defects from the date of purchase. This warranty reflects our confidence in the quality and reliability of the controller, even under demanding track use conditions.
Can I use this controller on a 992 Carrera or Turbo?
No, this controller is specifically designed for GT3, GT3 RS, GT3 Touring, 992.2 GTS, and 982 Boxster/Cayman models. The exhaust valve architecture and control systems differ between these performance models and standard Carrera/Turbo variants. For 992 Carrera and Turbo models, Kies offers a separate valve controller designed specifically for those vehicles.
Will the Kies Valve Controller void my Porsche warranty?
The Kies Valve Controller is a non-invasive electronic modification that does not permanently alter factory components. Under the Magnuson-Moss Warranty Act, a dealer cannot void your entire warranty simply because of an aftermarket part. However, if a dealer believes the controller caused a specific failure, they could deny coverage for that particular repair. The controller can be easily removed for service visits if desired. Many track-focused GT3 and Cayman GT4 owners use valve controllers without warranty issues.
Does the valve controller work with aftermarket exhaust systems?
Yes! The Kies Valve Controller works with factory exhaust systems (with or without PSE) and aftermarket exhaust systems that retain the electronic valve actuators. Popular systems from Akrapovic, Milltek, Fabspeed, Agency Power, and others typically retain the valve functionality. If your aftermarket exhaust completely removed the valve system, the controller cannot be used.
Can I use this controller during track days?
Absolutely! The Kies Valve Controller is engineered for track use and performs flawlessly during extended high-RPM operation. Many GT3 and Cayman GT4 track-day enthusiasts use the controller to maximize exhaust flow during sessions while maintaining the ability to drive quietly through residential areas to and from the track. The controller withstands multiple heat cycles and demanding conditions.
What is the wireless remote range?
The wireless remote has an effective range of approximately 50-100 feet in open areas. This allows you to control the valve system from inside your vehicle, garage, paddock area, or nearby locations. The remote uses reliable RF technology that is not affected by weather conditions.
What's the difference between 991.2 GT3 and 992 GT3 compatibility?
Both 991.2 GT3 (2017-2019) and 992 GT3 (2021+) models are compatible with this valve controller. While the exhaust routing differs between generations, both use similar electronic valve actuator systems that the Kies Controller is designed to work with. The same controller works across both GT3 generations, though installation procedures differ slightly.
Will this work on my Cayman GT4 or GT4 RS?
Yes! The Kies Valve Controller is fully compatible with 982 Cayman GT4 (2019-2023) and Cayman GT4 RS (2023) models. These track-focused mid-engine Porsches benefit significantly from full valve control, delivering the aggressive flat-six sound GT4 owners expect. The controller is also compatible with 718 Spyder models which share similar mechanical components.
How does this compare to deleting the exhaust valves entirely?
Unlike permanent valve deletion, the Kies Controller maintains full valve functionality while giving you control over when they're open. This provides the best of both worlds - aggressive sound when desired and civilized operation when needed. Valve deletion also creates constant loud exhaust noise that can be problematic for street driving, noise-restricted track days, and residential areas. The controller is also completely reversible, unlike valve deletion.
Why Performance Enthusiasts Choose Kies Motorsports
Performance-Focused Engineering: Kies Motorsports specializes in high-performance Porsche modifications with deep expertise in GT3, Boxster, and Cayman platforms. We understand the unique requirements of track-focused Porsches.
Track-Tested Reliability: Our valve controllers are tested extensively on track and during spirited street driving to ensure they perform flawlessly under demanding conditions.
Expert Technical Support: Our technical support team consists of actual Porsche enthusiasts with hands-on experience installing and using our products. We can answer specific questions about your GT3, Boxster, or Cayman model.
Fast Shipping: Most orders ship within 24 hours, getting your upgrade to you quickly so you can experience enhanced exhaust sound immediately.
Proven Track Record: Join thousands of satisfied GT3, Boxster, and Cayman owners who have enhanced their Porsche's sound with Kies valve controllers.
Model-Specific Documentation: Every controller includes detailed, model-specific installation instructions with photos to guide you through the installation process for your exact vehicle.
Model-Specific Information
For GT3 Owners:
The naturally aspirated 4.0L flat-six in your GT3 produces one of the greatest automotive sounds ever created. However, factory sound management restricts this symphony at low RPMs. The Kies Valve Controller unleashes the full sonic potential of your GT3's engine, creating that distinctive race-inspired idle and aggressive exhaust note that makes GT3s legendary. Whether you have a 991.2 GT3, 992 GT3, or GT3 RS, the Kies Controller transforms your daily driver into a street-legal race car with the flip of a button.
For Boxster/Cayman Owners:
The mid-engine layout of Boxster and Cayman models places the exhaust components immediately behind the cabin, making exhaust sound a central part of the driving experience. The Kies Valve Controller maximizes this natural advantage by ensuring valves remain fully open during spirited driving. Whether you're driving a base 982 Boxster, a Cayman GTS 4.0 with its naturally aspirated flat-six, or a track-focused Cayman GT4, the Kies Controller delivers the aggressive exhaust character these driver-focused Porsches deserve.
For 992.2 GTS Owners:
The new 992.2 GTS uses unique exhaust valve control different from standard Carrera models, requiring this specialized controller. The hybrid-assisted powertrain of the GTS benefits from optimized exhaust flow, and the Kies Controller ensures you're getting maximum performance and sound from this latest iteration of Porsche's performance lineup.
Shop with Confidence
Comprehensive coverage on manufacturing defects
Proven reliable under demanding conditions
Most orders ship within 24 hours
Porsche specialists ready to help
Ready to Unlock Your Porsche's True Voice?
Transform your GT3, Boxster, or Cayman driving experience today with the Kies Valve Controller. Experience the raw, unfiltered exhaust note these performance machines were engineered to produce, backed by our 3-year warranty and expert support.
Order now and join thousands of enthusiasts who demand the ultimate sound from their performance Porsche.
About Kies Motorsports Performance Solutions
Kies Motorsports has earned a reputation as a premier provider of Porsche performance upgrades, with specialized expertise in GT3, Boxster, and Cayman platforms. Our valve controller for these high-performance models represents years of development and testing to ensure perfect compatibility, reliable operation, and transformative results.
Whether you own a naturally aspirated GT3 with its screaming 9,000 RPM redline, a mid-engine Cayman GT4 built for track dominance, or a Boxster GTS 4.0 that balances daily usability with weekend performance, the Kies Valve Controller unlocks the full sonic potential of your Porsche without compromising reliability or requiring permanent modifications.
Understanding Porsche's Performance Model Lineup
Porsche's GT3 models represent the pinnacle of naturally aspirated performance, featuring track-focused engineering, lightweight construction, and some of the greatest-sounding engines ever produced. The mid-engine 982 Boxster and Cayman lineup offers balanced handling, driver engagement, and the unique sonic experience of having the engine mounted directly behind the cabin. Both platforms share one common limitation - factory exhaust valve programming that restricts sound potential in the name of compliance and civility.
The GT3 Difference
GT3 models from both the 991.2 and 992 generations feature specialized naturally aspirated flat-six engines that rev to 9,000 RPM, producing one of the most distinctive sounds in automotive history. However, even with Sport mode and valves "open," the factory system partially closes valves at idle and low RPMs. The Kies Valve Controller eliminates this restriction, allowing your GT3 to sing its proper song from idle to redline.
Mid-Engine Performance
The 982-generation Boxster and Cayman models, including performance variants like GTS 4.0, GT4, and GT4 RS, place the engine directly behind the driver for optimal weight distribution and handling. This mid-engine layout also places exhaust components in closer proximity to the cabin, making exhaust sound a more prominent part of the driving experience. The Kies Valve Controller maximizes this natural advantage, ensuring you experience every decibel of your flat-six's performance soundtrack.
Why Factory Restrictions Exist
Porsche implements exhaust valve restrictions for several practical reasons: noise regulations in various markets, neighborhood-friendly operation during early morning starts, emissions compliance, and general livability for daily use. While these considerations make sense for typical street driving, they prevent enthusiasts from experiencing the full performance character of their GT3, Boxster, or Cayman—especially during track days, spirited drives, or when maximum sound is desired.
Porsche Sport Exhaust Enhancement
If your GT3, Boxster, or Cayman is equipped with factory Porsche Sport Exhaust (PSE), the Kies Valve Controller provides even more dramatic results. PSE systems feature less restrictive mufflers, modified piping, and enhanced sound tuning that's partially negated by factory valve programming. The Kies Controller ensures you're extracting 100% of your PSE investment, delivering the aggressive sound Porsche engineered the system to produce.
