Search Tuning:

Registration Search

Home
0% Buy Now. Pay Later – Klarna
Contact Us
Vehicles
- All Makes
- Abarth
- Alfa Romeo
- Audi
- Bentley
  - All Models
- BMW
  - All Models
  - Servicing
  - DCT Gearbox Tune
  - ZF Gearbox Tune
  - 335D FXX
  - 650i F1X
  - M135i & M235i F2X
  - M140i & M240i F2X
  - M3 F80
  - M3 G8X
  - M4 F32/F33
  - M4 G8X
  - M5 F90
- Bugatti
  - Veyron
- Cupra
- Ferrari
  - All Models
- Lamborghini
  - All Models
- Land Rover
- McLaren
  - All Models
  - Servicing
  - 570S
  - 675LT
- Mercedes Benz
- Porsche
- Tesla
- Toyota
  - All Models
  - Servicing
  - Supra
  - Yaris GR
- VW
Tuning & Parts
Servicing
Our Services
About Us
- Meet The Team
- News
- jobs
Reviews
Dealer Locator Map
Tuning File Service
Basket

Contact
sales@jfautomotive.co.uk
Login
Dealers
Dealer Locator
Partners

1711+ Reviews

Menu
Vehicles
- All Makes
- Abarth
- Alfa Romeo
- Audi
- Bentley
  - All Models
- BMW
  - All Models
  - Servicing
  - DCT Gearbox Tune
  - ZF Gearbox Tune
  - 335D FXX
  - 650i F1X
  - M135i & M235i F2X
  - M140i & M240i F2X
  - M3 F80
  - M3 G8X
  - M4 F32/F33
  - M4 G8X
  - M5 F90
- Bugatti
  - Veyron
- Cupra
- Ferrari
  - All Models
- Lamborghini
  - All Models
- Land Rover
- McLaren
  - All Models
  - Servicing
  - 570S
  - 675LT
- Mercedes
- Porsche
- Tesla
- Toyota
  - All Models
  - Servicing
  - Supra
  - Yaris GR
- VW
Tuning & Parts
Services
0% Finance
Reviews
More About Us
- Meet The Team
- About Us
- News
- Jobs
Contact
Basket 0
Menu

Search Tuning...

Registration Search

Buy Now. Pay With Learn More

Performance Tuning

Search your vehicle to display results...

+25BHP?

??? BHPBefore ??? BHPAfter

Power

+25NM?

??? NMBefore ??? NMAfter

Torque

SALE N/A was N/A

SALE LIVE - Tuning From £247! 🏷️ ENDS 14th DECEMBER!

GET MY PRICE

LEARN MORE

Servicing

Using only the finest ingredients and parts to service your vehicle!

Find out more

All of our tuning files are custom written in house to suit driver and car always taking into account car engine condition and mileage. Some tuners or consumers still refer to ecu remapping as chip tuning and although its the same end result, most newer cars can not be "chipped" anymore.

Do I need stage 1, 2 or 3?

Stage 1 tune is a software re-calibration only.
Stage 2 tune is software re-calibrated to work with light engine modifications e.g Air Filter, exhaust, intercooler.
Stage 3 tune is software re-calibrated on the dyno for heavy engine modifications e.g Cold air intake, exhaust, intercooler, turbo upgrade and more.

Get My Price!

What we offer:

2000bhp Mustang AWD linked dyno housed in our purpose built tuning facility
Comprehensive £2million insurance backed work
30 day, no quibble, money back guarantee
Custom written software to your vehicle
Tuned files written by the JFA team.
Up to 20% improved fuel economy
Up to 40% more BHP and torque
Lifetime tuning software support
M.O.T compliant software
JFA Dealer network
Reliable and safe

Why is my vehicle not already optimised for peak performance?

Manufactures sell vehicles with a standard set of map files on the ECU so they can be shipped all around the world. Vehicles are shipped around the world meaning they have to deal with different climates and a magnitude of fuel types and quality, this is why the manufactures set a standard map that will simply work anywhere. Power and fuel economy is also limited on these maps because of market placement and sales tactics. For example; BMW needed to limit the power of the 335D just so its pace isn’t that of an M3. Performance engine tuning is essential for those drivers who feel their vehicle is not living up to its full potential. By increasing the power of your vehicle you are providing yourself with a more pleasurable car to drive that puts that smile back on your face. Whether the gain is 5 BHP on your 1.4 Ford Focus or 55 BHP on your BMW 335d, when you choose a JF Automotive ECU performance map, you will wonder why you didn’t come to us sooner! Get My Price

Gearbox Tuning

Faster gearshifts, raised torque limitation and quicker response times.

Find out more

Rolling Road Tuning

Mustang 4WD linked dyno with a 2000BHP capacity to assist our research and development.

Find out more

Eco-Blue Tuning

Up to 20% fuel savings combined with cleaner emissions and improved drivability.

Find out more

Filters

FIND YOUR VEHICLE OR SELECT MAKE

Registration Search

Make & Model

Filter By

Brand

Product Type

mercedes >> gls

mercedes gls ECU Remap | mercedes gls Chip Tuning | mercedes gls Performance Parts | mercedes gls Engine Tuning

Name: JF Automotive
Address: Unit 31, Integra, Parkwood Industrial Estate, Bircholt Rd, Maidstone, Kent, ME15 9GQ, United Kingdom
Telephone: 01622 321500
Price range: $$-$$$

Models

2015 - 2019
2020 -

Products (24)

Speed-Buster Tuning Box for Mercedes GLS 2015 – 2019 400 – 333HP

Tuning From Home!

£237.00
Add to basket!
Speed-Buster Tuning Box for Mercedes GLS 2015 – 2019 500 – 456HP

Tuning From Home!

£729.00
Add to basket!
Speed-Buster Tuning Box for Mercedes GLS 2015 – 2019 63 AMG – 585HP

Tuning From Home!

£729.00
Add to basket!
Speed-Buster Tuning Box for Mercedes GLS 2020 – 350D – 286HP

Tuning From Home!

£729.00
Add to basket!
Speed-Buster Tuning Box for Mercedes GLS 2020 – 400d – 330HP

Tuning From Home!

£729.00
Add to basket!
Autowatch Ghost Immobiliser For Mercedes GLS 2020 – 400d – 330HP

Protects your car from key cloning, hacking and key theft.

£499.00
Add to basket!
Autowatch Ghost Immobiliser For Mercedes GLS 2020 – 600 – 558HP

Protects your car from key cloning, hacking and key theft.

£499.00
Add to basket!
Autowatch Ghost Immobiliser For Mercedes GLS 2020 – 63 AMG S – 612HP

Protects your car from key cloning, hacking and key theft.

£499.00
Add to basket!
Autowatch Ghost Immobiliser For Mercedes GLS 2020 – 350D – 286HP

Protects your car from key cloning, hacking and key theft.

£499.00
Add to basket!
Autowatch Ghost Immobiliser For Mercedes GLS 2015 – 2019 350D – 258HP

Protects your car from key cloning, hacking and key theft.

£499.00
Add to basket!

Meet The Team

Facebook
Twitter
LinkedIn
Instagram
YouTube
TikTok

Search Tuning...

Search our ECU tuning options to increase the power and torque of your vehicle and our wide range of performance parts.

Registration Search

Contact us

sales@jfautomotive.co.uk 01622 321500

Unit 31 Integra:me Business Park
Bircholt Road
Parkwood Industrial Estate
Maidstone
Kent ME15 9GQ

Contact Us
Dealer Portal
Delivery
Finance
Meet The Team
Paint Protection Film
Privacy and Cookies Policy
Payl8r Calculator
Refer A Friend
Returns
Sitemap
Specialist Vehicles
Terms and Conditions
Trade Tuning File Service
Tuning

Managed by 300%

Trustpilot

Performance Tuning

Search your vehicle to display results...

+25BHP?

+25NM?

SALE N/A was N/A

Servicing

Performance Tuning

Do I need stage 1, 2 or 3?

What we offer:

Why is my vehicle not already optimised for peak performance?

Gearbox Tuning

Rolling Road Tuning

Eco-Blue Tuning

Filters

FIND YOUR VEHICLE OR SELECT MAKE

Make & Model

Filter By

Brand

Product Type

mercedes >> gls

mercedes gls ECU Remap | mercedes gls Chip Tuning | mercedes gls Performance Parts | mercedes gls Engine Tuning

Models

2015 - 2019

2020 -

Products (24)

Speed-Buster Tuning Box for Mercedes GLS 2015 – 2019 400 – 333HP

Speed-Buster Tuning Box for Mercedes GLS 2015 – 2019 500 – 456HP

Speed-Buster Tuning Box for Mercedes GLS 2015 – 2019 63 AMG – 585HP

Speed-Buster Tuning Box for Mercedes GLS 2020 – 350D – 286HP

Speed-Buster Tuning Box for Mercedes GLS 2020 – 400d – 330HP

Autowatch Ghost Immobiliser For Mercedes GLS 2020 – 400d – 330HP

Autowatch Ghost Immobiliser For Mercedes GLS 2020 – 600 – 558HP

Autowatch Ghost Immobiliser For Mercedes GLS 2020 – 63 AMG S – 612HP

Autowatch Ghost Immobiliser For Mercedes GLS 2020 – 350D – 286HP

Autowatch Ghost Immobiliser For Mercedes GLS 2015 – 2019 350D – 258HP

Meet The Team

Search Tuning...