Mercedes-Benz G400d W463A/W465 Remap & Tuning
Upgrade your Mercedes-Benz G400d 330HP with professional Stage 1 and Stage 2 ECU tuning from Onyx Performance in Slough, Berkshire. Our tuning solutions are designed to enhance the performance of the 3.0 I6 OM656 turbocharged diesel engine, delivering increased power and torque, sharper throttle response and improved overall drivability.
The Mercedes-Benz G400d W463A/W465 combines the iconic G-Class design with a powerful six-cylinder diesel engine. A professional ECU remap can optimise the engine’s calibration to unlock additional performance and improve torque delivery, making it even more responsive on the road and off-road.
Mercedes-Benz G400d Performance Figures
| Performance | Power (HP) | Torque (Nm) |
|---|---|---|
| Standard Performance | 330 | 700 |
| Stage 1 Remap | 395 | 800 |
| Stage 2 Remap | 415 | 830 |
Stage 1 Remap Price: £499.00
Original Price: £598.80
Stage 2 Remap: Call for a Stage 2 quote
Performance figures are indicative and may vary depending on vehicle condition, modifications, fuel quality and supporting hardware.
Gearbox Tuning
Alongside engine tuning, we can also discuss gearbox calibration options for your Mercedes-Benz G400d. Gearbox tuning can help optimise gear changes and complement the improvements from your engine remap.
- 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 remapping, we recommend ensuring your Mercedes-Benz G400d is mechanically sound. We can assess the vehicle and check for existing faults before tuning begins.
SERVICING AND MAINTENANCE
Regular servicing is essential for maintaining performance and reliability. We recommend keeping up with engine oil, filters and other manufacturer-recommended maintenance.
EXHAUST UPGRADES
Enhance your Mercedes-Benz G400d with an upgraded performance exhaust system. Depending on the setup, exhaust upgrades can improve exhaust flow and complement the vehicle’s performance.
PERFORMANCE UPGRADES
Supporting hardware upgrades can help complement your ECU remap. Options can be discussed based on your vehicle’s current specification and performance goals.
STYLING AND BODY UPGRADES
Give your Mercedes-Benz G400d a more distinctive appearance with styling enhancements and exterior upgrades selected to suit the iconic G-Class design.
VEHICLE SECURITY
Protect your Mercedes-Benz G400d with suitable vehicle security solutions. Contact our team to discuss available options.
WHY CHOOSE ONYX PERFORMANCE?
At Onyx Performance, we provide professional vehicle tuning and performance upgrades with a focus on quality, customer service and vehicle-specific solutions. Our team can help you choose the right upgrades for your Mercedes-Benz G400d.
REMAPPING IN SLOUGH
Onyx Performance provides vehicle remapping and performance services in Slough, Berkshire. Contact our team to discuss tuning options for your Mercedes-Benz G400d W463A/W465.
Frequently Asked Questions
How much power can a Stage 1 remap add to my Mercedes-Benz G400d?
The supplied Stage 1 figures show an increase from 330HP and 700Nm to 395HP and 800Nm. This represents a gain of 65HP and 100Nm.
How much power can a Stage 2 remap produce?
The supplied Stage 2 figures show 415HP and 830Nm, representing an increase of 85HP and 130Nm over standard performance.
Do I need hardware upgrades for Stage 1 or Stage 2?
Stage 1 tuning is generally designed around a standard vehicle, subject to its condition and suitability. Stage 2 may require supporting hardware upgrades, depending on the chosen calibration.
Can I have a gearbox remap with my engine remap?
Yes, gearbox tuning options can be discussed alongside your engine remap. Contact us for availability and pricing.
Can I have a dyno session?
Yes. We offer dyno sessions for £120.00. Contact us to arrange a session.
Do you offer Stage 3 tuning?
Contact Onyx Performance to discuss your vehicle’s specification and whether a suitable Stage 3 tuning solution is available.
Does my Mercedes-Benz need an ECU unlock?
The Mercedes-Benz G400d W463A/W465 uses a Bosch MD1CP001 ECU. ECU access and tuning requirements depend on the ECU hardware and software version. We recommend checking the ECU identification before confirming compatibility.
BOOK YOUR REMAP
Contact Onyx Performance to discuss your Mercedes-Benz G400d W463A/W465 remap. Our team can help you choose the right tuning option and arrange an assessment.
Contact Onyx Performance
Transform your Mercedes-Benz G400d W463A/W465 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.
