Mercedes-AMG A35 / CLA35 / GLA35 / GLB35 Remapping and Tuning
Unlock the full potential of your Mercedes-AMG A35, CLA35, GLA35, or GLB35 (2.0L Turbo M260 Engine) with Onyx Performance, based in Slough, Berkshire, just outside West London. Whether you’re seeking a straightforward power boost or a comprehensive Stage 2 upgrade, we provide expert ECU remapping, TCU (gearbox) tuning, servicing, performance upgrades, and vehicle security solutions tailored specifically for your AMG 35 model.
Our tuning packages are customised for both 4MATIC and front-wheel-drive models, ensuring exceptional performance while preserving reliability.
Mercedes-AMG A35 / CLA35 / GLA35 / GLB35 Stage 1 & Stage 2 – Power Gains
Stage 1 – Power Gains
- Stock Power: 306HP / 400Nm (varies slightly by model)
- Stage 1 Remap: 370HP / 480Nm
- Hardware Required: None
Our Stage 1 remap provides a substantial increase in power and torque without requiring hardware upgrades. With Onyx Stage 1 TCU Software (for AMG Speedshift DCT models), your AMG 35 will benefit from:
- Optimised gear shifts
- Enhanced throttle response
- Sharper overall performance
🔧 Spark Plug and Ignition Coil Upgrade: Recommended for Stage 1 tuning to ensure improved ignition performance, enhanced reliability, and consistent performance under increased loads.
Stage 2 – Power Gains
- Stage 2 Remap: 400HP / 520–530Nm
- Hardware Required:
🔧 Decat Downpipe
🔧 Cat-Back Exhaust System (Optional but recommended)
🔧 Upgraded Air Filter
🔧 GPF Delete (Recommended for maximum sound and performance)
Stage 2 tuning builds on the Stage 1 foundation, incorporating hardware upgrades to:
- Enhance airflow
- Improve cooling efficiency
- Maximise turbo performance
Performance figures may vary depending on hardware and fuel quality.
Looking for Even More Power?
For those seeking ultimate performance, we offer Stage 3 tuning packages featuring:
- Hybrid turbo upgrades
- Upgraded fuel systems
- Supporting modifications for even greater power and torque
📞 Call us on 01753 439321 to explore Stage 3 options!
Why Choose Onyx Performance?
✔ Rolling Road (Dyno) Testing for precise power measurement
✔ Data Logging and Diagnostics for optimal performance monitoring
✔ Before and After Performance Printouts
✔ Engine Smoke Tests to check for boost or vacuum leaks
✔ Optional Features: Overrun Crackles, Speed Limiter Removal, Catalyst Fault Code Deletes
Our team ensures your AMG 35 delivers unparalleled power, responsiveness, and reliability, preserving engine safety.
Exhaust Upgrades for Mercedes-AMG A35 / CLA35 / GLA35 / GLB35
Enhance the sound and performance of your AMG 35 with high-performance exhaust options:
🔧 Decat Downpipes – Improve turbo efficiency and exhaust flow for maximum power
🔧 High-Flow Sports Catalysts – Reduce backpressure while maintaining emissions compliance
🔧 Cat-Back Exhaust Systems – Refine exhaust tone and sound quality
🔧 Resonator Deletes – Add an aggressive exhaust note
🔧 GPF Delete – Remove the Gasoline Particulate Filter (GPF) for improved sound and performance
Pair Stage 2 tuning with a decat downpipe or high-flow catalyst for maximum gains and an exhilarating exhaust note.
Servicing and Maintenance for Mercedes-AMG A35 / CLA35 / GLA35 / GLB35
Keep your AMG 35 in peak condition with Onyx Performance’s tailored servicing:
🔧 Routine Servicing: Oil changes, filter replacements, and essential inspections
🔧 Brake Repairs and Upgrades: OEM replacements and performance brake kits
🔧 Suspension Maintenance: Optimisations for better handling and ride comfort
🔧 Diagnostics and Fault Repairs: Advanced scans to pre-empt potential issues
Trust our expertise to ensure long-term reliability and performance for your AMG.
Styling, Performance Upgrades & Vehicle Security
Enhance your Mercedes-AMG A35, CLA35, GLA35, or GLB35 with bespoke styling, performance upgrades, and security solutions:
Styling and Performance Upgrades
🔧 Aero Kits & Carbon Fibre Components – Aggressive styling with aerodynamic benefits
🔧 Lowering Springs & Coilovers – Improved handling and stance
🔧 Big Brake Kits – Superior stopping power for track and road
Vehicle Security Solutions
🔒 Autowatch Ghost Immobilisers – Prevents key cloning and unauthorised starts
🔒 MetaTrak Trackers – Live GPS tracking with mobile app integration
🔒 Scorpion Track Systems – Motion alerts, driver recognition, and enhanced recovery
🔒 Fleet Trackers – Ideal for monitoring multiple high-value vehicles
Our security systems are professionally installed to provide maximum protection for your AMG.
What Our Customers Say
⭐ “Stage 1 tuning completely transformed my A35! Faster, more responsive, and feels incredible. Thanks, Onyx Performance!”
– Josh T., London
⭐ “Stage 2 with downpipe, GPF delete, and gearbox software made my CLA35 insane. The torque increase and exhaust tone are unreal!”
– Ahmed R., Manchester
Opening Hours and Contact Information
📍 Visit Us: Slough, Berkshire
🕒 Opening Hours:
- Monday–Friday: 10 AM–6 PM
- Saturday: 10 AM–3 PM
- Closed Sundays
📞 Phone: 01753 439321
📧 Email: info@onyxperformance.co.uk
Why Onyx Performance?
At Onyx Performance, we specialise in high-quality tuning, servicing, and upgrades for AMG models. Our experienced team ensures:
- Maximum performance
- Unmatched reliability
- Peace of mind
📞 Call us now on 01753 439321 to book your service or discuss Stage 2 tuning options!
Unlock the true potential of your Mercedes-AMG today!
Tags:
- Mercedes-AMG A35 / CLA35 / GLA35 / GLB35 tuning in Slough
- Stage 1 remap for Mercedes-AMG A35 (370HP / 480Nm)
- Stage 2 tuning for Mercedes-AMG CLA35 (400HP / 520Nm)
- Decat downpipes for AMG A35, CLA35, GLA35, GLB35
- GPF delete for improved exhaust sound and performance
- Servicing and maintenance for Mercedes-AMG 35 models
- TCU tuning for AMG Speedshift DCT
- Big brake kits for Mercedes-AMG 35 series
- Vehicle security for AMG A35 / CLA35 / GLA35 / GLB35 with immobilisers and trackers
- Custom aero kits and carbon fibre styling for AMG 35 models
- High-performance exhaust systems for AMG A35 and CLA35
- Mercedes-AMG tuning specialists in Slough
- Onyx Performance ECU remapping for AMG 35
- Reliable and safe tuning for Mercedes-AMG 35 series
