Will the Fabspeed XperTune Performance Software fit my G 63?

It is calibrated for the W463 Mercedes-AMG G 63 with the M157 5.5-liter twin-turbo V8, built from 2015 to 2018. It is not for the later W463A G 63, which uses a different engine. It is a handheld flash rather than a mail-in service, so confirm your model and year before ordering.

How much power does it add?

On Fabspeed's dyno the Fabspeed XperTune Performance Software freed up to 101 horsepower and 161 lb-ft from the 5.5-liter twin-turbo V8. Figures come from a specific test vehicle and vary with fuel, modifications and conditions, and a vehicle running a Fabspeed exhaust will see the most.

How is the tune installed?

It is loaded with a handheld OBD-II programmer, so there is no ECU to remove or mail. You connect the handheld to the vehicle and a Windows PC, read your stock data and email it to Fabspeed, then write the custom tune the tuner sends back to the handheld and flash it to the vehicle yourself.

Can I return the vehicle to stock?

Yes. The handheld lets you flash the vehicle back to its original programming at any time, without sending in your ECU. This makes the upgrade fully reversible if you sell the vehicle or need to return it to stock for service.

Do I need a special computer, and does it work with other modifications?

You need a Windows PC to run the tuning software, as Mac OS is not supported, and the handheld marries to a single vehicle. The tune can be run alone or paired with a Fabspeed exhaust and other bolt-ons, which unlock the largest gains.

Is it emissions legal or CARB approved?

No. This software is not CARB approved and is not for sale or use in California or other states that require CARB certification. It is intended for closed-course, competition or off-road use where legal. Check your local and state regulations before ordering or installing.

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Description

Fabspeed XperTune Performance Software for W463 Mercedes-AMG G 63

Fabspeed XperTune Performance Software for the W463 Mercedes-AMG G 63 delivers a decisive bump in pace with up to +101hp and +161lb-ft while preserving the truck’s refined, everyday manners. Calibrated to optimize boost targets, ignition timing, torque management, and throttle mapping, it sharpens response and fattens midrange pull without compromising drivability or reliability. Installation is straightforward with the included handheld tuner: connect to the OBD-II port, follow the prompts, and flash the G 63 at home for a smoother, harder-charging AMG experience.

Features

+101hp and 161tq
Improved engine performance
Drivability remains uncompromised
Handheld tuner

Applications

Mercedes-AMG G 63: W463 | 2015-2018 | M157 5.5L Twin-Turbo V8

Notes

Please review the tuning guide in the instructions and email the ECU tuning Information form. This form is utilized to ensure your needs are met and to consider your modifications for the best possible product.
You must have access to a PC / Windows computer (Mac OS not supported) to upload your factory file information to Fabspeed via email and in turn apply their ECU Tune to your handheld device
Upon sending your vehicle information, Fabspeed’s tuner will email you a custom ECU Tune(s) within 1-2 business days
The handheld device “marries” with your vehicle and can only be used on one vehicle
Special requests and tune file upgrades may be subject to additional fees
This device allows you to flash the vehicle back to stock without sending in your ECU

Tuning Notes

Step 1 – Read stock data on vehicle via OBD-II port with handheld
Step 2 – Interface handheld with software on your computer and send in data to Fabspeed Motorsport via email
Step 3 – They use this data along with information you provide about your vehicle to write a tune for your specific setup and email back your custom tune in 1-2 business days
Step 4 – Write the Fabspeed ECU Tune to your handheld, then to the vehicle with the handheld

Frequently Asked Questions

Will the Fabspeed XperTune Performance Software fit my G 63? It is calibrated for the W463 Mercedes-AMG G 63 with the M157 5.5-liter twin-turbo V8, built from 2015 to 2018. It is not for the later W463A G 63, which uses a different engine. It is a handheld flash rather than a mail-in service, so confirm your model and year before ordering.
How much power does it add? On Fabspeed’s dyno the Fabspeed XperTune Performance Software freed up to 101 horsepower and 161 lb-ft from the 5.5-liter twin-turbo V8. Figures come from a specific test vehicle and vary with fuel, modifications and conditions, and a vehicle running a Fabspeed exhaust will see the most.
How is the tune installed? It is loaded with a handheld OBD-II programmer, so there is no ECU to remove or mail. You connect the handheld to the vehicle and a Windows PC, read your stock data and email it to Fabspeed, then write the custom tune the tuner sends back to the handheld and flash it to the vehicle yourself.
Can I return the vehicle to stock? Yes. The handheld lets you flash the vehicle back to its original programming at any time, without sending in your ECU. This makes the upgrade fully reversible if you sell the vehicle or need to return it to stock for service.
Do I need a special computer, and does it work with other modifications? You need a Windows PC to run the tuning software, as Mac OS is not supported, and the handheld marries to a single vehicle. The tune can be run alone or paired with a Fabspeed exhaust and other bolt-ons, which unlock the largest gains.
Is it emissions legal or CARB approved? No. This software is not CARB approved and is not for sale or use in California or other states that require CARB certification. It is intended for closed-course, competition or off-road use where legal. Check your local and state regulations before ordering or installing.

About Fabspeed

Fabspeed Motorsport is situated in Fort Washington, Pennsylvania, within the United States of America. Their extensive 26,000 sqft. facility serves as a hub for various car clubs, including Porsche Club of America, Ferrari, McLaren, Lamborghini, and more. The company is renowned for its comprehensive approach to product development. They handle the entire process, from design and engineering to dyno testing, street trials, and racing assessments, ensuring the quality and performance of every item. Fabspeed also collaborates closely with race engine builders and tuners hailing from Italy, Germany, and the United States, resulting in the creation of the Ultimate Performance parts. To cater to their passionate global audience, Fabspeed meticulously crafts systems using aerospace-grade austenitic stainless steel, titanium, and carbon fiber materials, setting a standard for excellence in the industry.

Additional Information

The Bulletproof Automotive website contains many thousands of products purchased in multiple different currencies. All of the prices are entered manually and accurately at the time of entry. Due to the consistently fluctuating international exchange rates, at times prices may not be able to be honored at their original intended rate. We apologize for any inconvenience this may cause, unfortunately our website is unable to compensate dynamically for what can at times be volatile changes in the cost of items due to currency values fluctuating, changes in prices from suppliers, changes in shipping and import duties, and other factors. Rest assured that any order you place on line will be at zero risk to you in this area. If in the event your order cannot be fulfilled at the original intended website price we will offer you a 100% refund, no questions asked. We will continue to do our best to maintain updated prices and we will always continue to offer our price match guarantees as well to ensure our prices are always the best for you. In short, prices may change without notice. It is always advised to give us a call prior to placing your order online to confirm availability and to confirm current pricing.

Shipping Policy

Items that are in stock in the US, either at Bulletproof’s warehouse or at a supplier’s warehouse, are generally delivered within 7-10 days. Special order items from overseas take considerably longer. As a courtesy Bulletproof offers delivery estimates to our customers which take into consideration manufacturer availability and shipping schedule. These estimates represent our best guess based on previous orders from the manufacturer and do not in any way imply a guaranteed delivery window. Many manufacturers work in a “just in time” inventory system and often take 2-20+ weeks to produce an item once an order is submitted. All deliverable items are then sent to our Japanese warehouse. Bulletproof ships a minimum of one full ocean freight container every month from Japan, oftentimes more than one a month. Ocean freight takes an average of 4 weeks. Typically it breaks down to one week in Japan for paperwork and customs, two weeks by boat and one week in US customs/clearance. Due to the wide number of variables between manufacturer and shipping schedules, delivery estimates are simply just that – estimates. We attempt to estimate conservatively and we usually deliver faster than our estimates suggest. It is not Bulletproof’s policy to guarantee delivery time of any special order item, this is impossible for us to do. By ordering you acknowledge that there is no required delivery ETA and an order may not be canceled or altered due to manufacturing or shipping delays, all ETA’s are provided as a best guess only. Please review the full Terms & Conditions here.

BP Pricing Difference

We do pricing a little differently on our JDM brands and we believe in making things simple and clear. No hidden fees or surcharges. Every price you see includes the shipping cost to our office in Los Angeles, California and all the associated taxes/duties/fees for bringing the products into the US. The only shipping you ever pay is from our facility in the US to your location. Be wary of resellers that don’t include the cost of international shipping in their pricing on JDM parts. While we believe we’ll always have the lowest all-in price on JDM products, we offer a price match guarantee for all authentic parts purchased from authorized dealers as well. For many international customers, it’s much more affordable to ship from the USA than from Japan directly, as the air freight and ocean freight costs are typically much less. However, for customers looking to ship directly from Japan outside of North America, or domestically in Japan, we can provide pricing specifically for that scenario. Please do not hesitate to contact us with any pricing questions or concerns. Please email us at sales@bulletproofautomotive.com with any inquiries.

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Fabspeed XperTune Performance Software for W463 Mercedes-AMG G 63 [FS.MER.G631518.ET]

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Fabspeed XperTune Performance Software for W463 Mercedes-AMG G 63

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