Porsche 911 Turbo 991.1/991.2 Remap & Tuning
Upgrade your Porsche 911 Turbo 3.8 Twin Turbo flat-6 520HP / 540HP with professional Stage 1 and Stage 2 ECU tuning from Onyx Performance in Slough, Berkshire. Our performance remapping is designed to increase power and torque, improve throttle response and deliver stronger acceleration while maintaining everyday drivability.
The Porsche 911 Turbo 991.1/991.2 combines a twin-turbocharged 3.8-litre flat-six petrol engine with exceptional performance and precision engineering. Our tailored ECU tuning options unlock additional performance, giving your 911 Turbo stronger acceleration, increased torque and a more responsive driving experience.
Porsche 911 Turbo Performance Figures
| Performance | Power (HP) | Torque (Nm) |
|---|---|---|
| Standard Performance – 991.1 | 520 | 660 |
| Standard Performance – 991.2 | 540 | 710 |
| Stage 1 Remap | 630 | 820 |
| Stage 2 Remap | 680 | 870 |
Stage 1 Remap Price: £699.00
Original Price: £838.80
Stage 2 Remap: Call for a Stage 2 quote
Performance figures are indicative and can vary depending on vehicle condition, modifications, fuel quality and individual vehicle specifications. Standard figures vary between the 991.1 and 991.2 versions.
Gearbox Tuning
Alongside engine remapping, gearbox tuning can help optimise gear changes and complement your 911 Turbo’s increased engine performance. Contact our team to discuss the most suitable gearbox software for your vehicle.
- Stage 1 Gearbox Remap: Contact for Price
- Stage 2 Gearbox Remap: Contact for Price
- Stage 3 Gearbox Remap: Contact for Price
BEFORE TUNING
Before carrying out any ECU remapping, we recommend ensuring your Porsche 911 Turbo is in good mechanical condition. Any existing engine or drivetrain faults should be diagnosed and resolved before tuning. Our team can discuss your vehicle’s condition and requirements before proceeding.
SERVICING AND MAINTENANCE
Regular servicing is important for maintaining the reliability and performance of your Porsche 911 Turbo. We recommend keeping up with scheduled maintenance, using the correct engine oil and replacing filters and spark plugs when required. A well-maintained vehicle provides a better foundation for performance tuning.
EXHAUST UPGRADES
An upgraded exhaust system can complement an ECU remap by improving exhaust flow and enhancing the sound of your Porsche 911 Turbo. Contact Onyx Performance to discuss exhaust options suited to your vehicle and performance goals.
PERFORMANCE UPGRADES
For owners looking to go beyond a Stage 1 remap, additional performance modifications may be considered. Depending on the vehicle’s specification and intended use, upgrades can include:
- Performance intake systems
- Upgraded intercooling solutions
- Performance exhaust systems
- Supporting hardware modifications
- Bespoke ECU tuning
Hardware requirements should be assessed before choosing a Stage 2 setup.
STYLING AND BODY UPGRADES
Enhance the appearance of your Porsche 911 Turbo with styling upgrades selected to complement its performance character. Contact our team to discuss available styling and body enhancement options.
VEHICLE SECURITY
Protect your Porsche with suitable vehicle security solutions from Onyx Performance. Speak to our team about available security enhancements and options for your 911 Turbo.
WHY CHOOSE ONYX PERFORMANCE?
At Onyx Performance, we provide tailored vehicle tuning and performance upgrades with a focus on delivering a dependable, enjoyable driving experience.
- Professional ECU remapping
- Tailored Stage 1 and Stage 2 tuning options
- Performance upgrades and exhaust solutions
- Gearbox tuning options
- Vehicle styling and security enhancements
- Based in Slough, Berkshire
REMAPPING IN SLOUGH
Onyx Performance provides professional ECU remapping in Slough, Berkshire. Whether you want improved everyday performance from a Stage 1 remap or are considering a more extensive Stage 2 setup, our team can help you choose the right solution for your Porsche 911 Turbo.
Frequently Asked Questions
How much power can a Stage 1 remap add to my Porsche 911 Turbo?
The standard Porsche 911 Turbo produces 520HP and 660Nm in the 991.1 version, or 540HP and 710Nm in the 991.2 version. A Stage 1 remap can increase power to approximately 630HP and 820Nm, depending on vehicle condition and specification.
How much power can a Stage 2 remap produce?
Our indicative Stage 2 figures are 680HP and 870Nm. Stage 2 tuning may require supporting hardware upgrades, which should be assessed before work begins.
Do I need hardware upgrades for Stage 1 or Stage 2?
Stage 1 tuning is generally designed around the standard vehicle hardware, subject to its condition and compatibility. Stage 2 may require supporting modifications. We can advise on the requirements for your 911 Turbo.
Can I have a gearbox remap with my engine remap?
Yes. Gearbox tuning can be considered alongside an engine remap. Contact us to discuss compatibility and available gearbox tuning options.
Can I have a dyno session?
Yes. We offer dyno sessions for £120.00 to help assess your vehicle’s performance.
Do you offer Stage 3 tuning?
Contact Onyx Performance to discuss bespoke Stage 3 tuning and the supporting hardware that may be required for your vehicle.
Does my Porsche need an ECU unlock?
The Porsche 911 Turbo 991.1/991.2 is listed with a Continental SDI21.x ECU. ECU access and tuning compatibility can depend on the exact ECU hardware and software version fitted to your vehicle. We recommend verifying the ECU identification before confirming the tuning method.
BOOK YOUR REMAP
Ready to improve the performance of your Porsche 911 Turbo? Contact Onyx Performance to discuss your tuning requirements and arrange your remap in Slough, Berkshire.
Contact Onyx Performance
Transform your Porsche 911 Turbo today with Onyx Performance. Whether you’re looking for Stage 1 or Stage 2 remapping, performance exhaust systems, styling enhancements, or vehicle security solutions, our expert team is here to help.



