Monte GT.
A new generation OBD car tuner device.
Controlled via mobile app
10-25% more power
and torque
5-10% more
fuel savings
--------
power
+---hp*
Stock: ---hp*
Tuned: ---hp*
power
+---nm*
Stock: ---nm*
Tuned: ---nm*
*Real world gains may be less or more depending on a large number of contributing factors such as displacement, aspiration and selected tuning mode.
Achieve up to 10% more fuel saving by using ECO 2 mode
Find out how much money you can save
1 month
1 month
2 years
$39
Your savings
Plug and play installation in less than 5 minutes
No special automotive knowledge needed. Connects via the OBDII port in the car's cabin
Reversible
No permanent ECU changes
HOW TO INSTALL
1:15
No special automotive knowledge needed. Connects via the OBDII port in the car's cabin
One app for everything
One app for everything
Switch between modes
Control your car’s tuning directly from your smartphone. Switch between performance and fuel-saving modes instantly with a single tap .
Unlimited use with no hidden fees
Access your vehicle-specific tune from our cloud database of over 9,000 supported vehicles — directly from your smartphone .
Watch speed in real time and more
Turn your phone into a real-time speedometer that accurately displays your current speed.
Easy pairing with Bluetooth
Lightning-fast data transfer with instant, seamless pairing.
Switch between modes
Control your car’s tuning directly from your smartphone. Switch between performance and fuel-saving modes instantly with a single tap ,
Unlimited use with no hidden fees
Access your vehicle-specific tune from our cloud database of over 9,000 supported vehicles — directly from your smartphone.
Watch speed in real time and more
Turn your phone into a real-time speedometer that accurately displays your current speed
Easy pairing with Bluetooth
Lightning-fast data transfer with instant, seamless pairing
Upgrade your driving with Monte GT
Monte GT
$269.00
Performance tuning
Fuel economy tuning
App-controlled tuning
Monte GT
OBD2 cable
Quick start guide
Magnet mount
Aluminium GT car badge
Other products
Tech specs
Performance figures
10-25%* more horsepower
10-25%* more torque
5-10%* better fuel saving
Warranty and return
30 days money back and
lifetime warranty on defects
software
Monte 2.2 firmware core
IOS/Android app with vehicle
specific tuning database
hardware
16 pin OBDII connector
Operating temp. -40C° +85C°
Operating voltage 7,5V - 20V
dimension
Length: 78 mm
Width: 55 mm
Height: 18 mm
What’s in the box?
Monte GT
Quick start guide
OBDII connector
Magnet mount
Car stickers
Lifetime warranty
We provide a lifetime warranty covering manufacturing defects for the lifetime of the product.
30-day return policy
You may return your order within 30 days from the delivery date in line with our standard policy.
Free worldwide shipping
Orders are shipped from US warehouses with worldwide delivery that is fast and secure .
Frequently asked questions
Monte GT is a plug-and-play performance chip and ECU tuning device designed to improve engine performance and fuel efficiency. It connects directly to your vehicle’s OBD-II port and works as an advanced car tuner, allowing you to switch driving modes using your smartphone.
Yes. Monte GT is a safe, non-invasive ECU tuning solution. It does not overwrite factory ECU software or make permanent changes. All adjustments stay within the vehicle’s built-in safety limits.
No. Monte GT does not permanently modify your ECU. When the device is removed, the vehicle gradually returns to factory behavior through normal ECU adaptation.
Monte GT improves engine output by optimizing factory parameters:
-
Naturally aspirated engines: approximately 10–15%
-
Turbocharged engines: approximately 10–25%
Fuel saver modes can also improve fuel economy by up to 5%, depending on driving habits and conditions.
Monte GT requires an ECU learning period. While many drivers feel changes quickly, full ECU adaptation typically takes about 120 miles (200 km) of normal driving. This does not need to be completed in a single trip — the miles can be accumulated over multiple short or long drives, as the ECU adjusts fuel trims, ignition strategy, and torque modeling over multiple drive cycles.
Monte GT includes multiple driving modes such as Performance, Sport, Economy, and Stock. Available modes may vary depending on the vehicle.
The Monte GT app lets you apply vehicle-specific tuning profiles, switch driving modes, and manage updates via Bluetooth.
No. Once a mode is selected, the app can be closed. The selected mode remains active as long as the device stays connected.
Yes. The device must remain plugged into the OBD-II port to maintain the tuning effect.
Installation takes just a few minutes. Plug the device into the OBD-II port and pair it with the app.
Yes. Monte GT is not locked to a single vehicle and can be reused on other compatible cars or trucks.
To transfer Monte GT to a new vehicle, unplug the device from the current vehicle and connect it to the new one. Use the Monte GT app to select the new vehicle profile and allow the ECU to complete its normal adaptation process.
The new vehicle must be available in our database. If it does not appear, contact our support team and we can add or confirm compatibility before use.
Monte GT does not overwrite ECU software or make permanent changes. Because it is removable and operates externally, it can be unplugged at any time and does not leave any permanent traces of having been used.
Monte GT operates within OEM standards and factory safety parameters. Warranty decisions are ultimately made by the vehicle manufacturer or dealer.
Monte GT does not flash or rewrite ECU software. When removed, the vehicle gradually returns to factory behavior through normal ECU adaptation, and no record or permanent trace of the device remains in the ECU indicating it was ever installed.
Yes. Monte GT optimizes engine parameters and works independently of transmission type, including automatic, DSG, and CVT gearboxes.
Monte GT does not directly change throttle sensitivity. Instead, it improves torque delivery, which makes the vehicle feel more responsive during acceleration.
No. Monte GT is designed to work with the manufacturer-recommended fuel grade. Using higher-octane fuel may enhance performance on some engines, but it is not required.
Yes. Monte GT supports both gasoline and diesel vehicles, including turbo-diesel engines.
Yes. Monte GT supports many hybrid vehicles equipped with an OBD-II port. Compatibility depends on the vehicle and powertrain, so we recommend checking our database or contacting support to confirm fitment.
Each time you switch modes, the ECU begins a new adaptation cycle for the selected profile. For best results, allow up to 120 miles (200 km) of normal driving after each mode change.
Monte GT operates within factory ECU safety parameters. If a warning light appears, unplugging the device will allow the vehicle to return to normal operation.
No. Monte GT draws minimal power and automatically powers down when the vehicle is turned off. It will not drain your battery during normal use.
Monte GT works with most OBD-II-equipped vehicles. You can use our compatibility database to confirm fitment.
If your vehicle does not appear, contact our support team anyway — we may have newly released tuning profiles that haven’t been uploaded yet.
Do you still have any questions?
Meet Anna and Kevin. They’re here to answer your questions and help you choose the right device
Average response time: 5 minutes
