SKU: 81657417167

Fabspeed AMG 63 4.0L V8 Bi-Turbo XperTune Performance Software (FS.MER.M177.ET)

Sale price$2067.72 Regular price$2297.47
Save 10%

Pay in installments of $574.37 with ShopPay, AfterPay and Klarna

Shipping Estimate
USA
  • USA
  • CAN

Ships within 48 hours · Estimated delivery Sep 9 - Sep 14

Promo Codes Available:

For Your Every Summer RSVP, with Code: SUMMER15

Description

Fabspeed AMG 63 4.0L V8 Bi-Turbo XperTune Performance Software (FS.MER.M177.ET)Performance ECU software upgrade improves horsepower, torque, and driving characteristics of the M177 4. 0L V8 Bi Turbo Engine by reprogramming various sensor inputs, air fuel ratios, and boost pressure. FEATURES: Fits all Mercedes Benz AMG 63 M177 4. 0L V8 Bi Turbo Vehicles: C Class E Class S Class GLS Class GLE Class GLC Class SL Class G Class Peak Gains: Stock 547 HP 664 TQ Tuned 595 HP 681 TQ Max Gains: 60 WHP 71 ft lbs TQ Fabspeed Motorsport

Performance ECU software upgrade improves horsepower, torque, and driving characteristics of the M177 4.0L V8 Bi-Turbo Engine by reprogramming various sensor inputs, air/fuel ratios, and boost pressure.                                 

FEATURES:

  • Fits all Mercedes-Benz AMG 63 M177 4.0L V8 Bi-Turbo Vehicles: C-Class / E-Class / S-Class / GLS-Class / GLE-Class / GLC-Class / SL-Class / G-Class 
  • Peak Gains:
    • Stock - 547 HP / 664 TQ
    • Tuned - 595 HP / 681 TQ
  • Max Gains:
    • 60 WHP
    • 71 ft/lbs TQ
  • Fabspeed Motorsport saves your stock/factory ECU settings so that you can revert your vehicle back to stock settings at any time

TUNING PROCESS:

  1. Read stock data on vehicle via OBD-II port with Handheld
  2. Interface Handheld with software on your computer and send in data to Fabspeed Motorsport via email to [email protected] 
  3. We 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
  4. Write the Fabspeed ECU Tune to your Handheld, then to the vehicle with the Handheld
  5. Enjoy your increased performance!

No need to send your ECU in to return to stock - simply use the Handheld to flash back, then to your Fabspeed XperTune again at any point! 

NOTES:

  • Please review our Tuning Guide in the instructions above and email the ECU Tuning Information form to us. We utilize this form to ensure we meet your needs and consider your modifications to deliver the best possible results.
  • You must have access to a PC / Windows computer (Mac OS not supported) to upload your factory file information to us via email and in turn apply our ECU Tune to your Handheld device. 
  • Upon sending us your vehicle information, our 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.

Purchase Disclaimer: Fabspeed Motorsport does not condone the use of emission defeat devices for any vehicles used on public streets or roadways. Fabspeed Motorsport will not tamper, remove, disable, or bypass emissions equipment on a motor vehicle in accordance with 40 CFR Section 86.1854.12(a)(3), Clean Air Act 40 CFR 1068.101(b). This includes software, known as tunes, that reprogram a motor vehicles electronic control module to alter engine performance and enable the removal of filters, catalysts, and other critical emissions controls.

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 81657417167

Discover Niche Categories That Outsell

Top-Converting Item to Boost Your Average Order

4.7 ★★★★★
Based on 26 reviews
Sort
Highest Rating
Newest First
Oldest First
Product Reviews
A
Verified Purchase
Angela A Mathis
Lake Worth, US
★★★★★ 5
Good Product
Color: Pink & Beige, Size: Medium/Large(fits size 8 to 11)
These socks are good for moistening. Durability is awesome Fit true to size. Traction could be a little better. The sock are very comfortable
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 23, 2026
T
Verified Purchase
Tj
Alexandria, US
★★★★★ 4
Slippery when wet!!!
Color: Pink & Beige, Size: Medium/Large(fits size 8 to 11)
“These moisturizing slippers are actually really comfortable and feel great on the feet. They’re soft, cozy, and do help moisturize while you wear them. I also think they’re a good value for the money. The only downside is that once your feet get moisturized, they can get slippery inside the slippers, so I wouldn’t recommend walking around too much in them. Better for relaxing and letting your feet soak up the moisture than for being up and moving around.”
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 26, 2026
J
Verified Purchase
J. Randle
West Palm Beach, US
★★★★★ 5
Love them
Color: Pink & Beige, Size: Medium/Large(fits size 8 to 11)
I wear a size 11.5 in ladies shoe and these just barely fit. Butttt after I put lotion on my feet and slipped these on and left them on for about 30 mins. It left my feet really soft! They work great as intended. Would buy again
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 31, 2026
V
Verified Purchase
Vonda Kioultzopoulos
Charlottesville, US
★★★★★ 3
Effective but may be uncomfortable
Color: Pink & Beige, Size: Medium/Large(fits size 8 to 11)
I have eczema on my feet and use a prescription cream that I leave on overnight. I often have a problem sleeping in socks but the silicone feels cool on my feet. The only drawback I have is the opening of the socks feel very tight around my ankles making them uncomfortable on me. I wish the opening was a bit more flexible.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on September 20, 2025
T
Verified Purchase
Tessy
Louisville, US
★★★★★ 1
Burned my already sensitive feet, too big
Color: Pink & Beige, Size: Medium/Large(fits size 8 to 11)
Feels icky, and the heat gets trapped and literally felt like my feet were being burned by these. The bottoms of these feel prickly and they are way too big. You have to sit still and cannot walk in them.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 22, 2026

recommand products