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Free UPS shipping · 30-day returns · Lifetime warranty$399

Monte GTR

OBD2 Gauge Display That Also Tunes Your Engine

Monte GTR is a touch-screen display that plugs into your OBD-II port. It shows live engine data, reads and clears trouble codes, times your 0–60 — and adds power with a calibration made for your engine. No wiring, no ECU flash.

From $33.25/mo with Affirm

Calibrated for your engine · 30-day returns · Lifetime warranty

OBD2 gauge display

Everything on one screen. Gauges, codes, 0–60 and dyno.

What the display shows. A digital gauge cluster on your dash.

Live gauges

A digital speedometer and tachometer, plus four cells you pick.

SpeedRPMCoolant tempBattery voltsBoost gaugeFuel pressureThrottle angle

Readings depend on what your car’s ECU reports.

Code reader

Check engine light on? Read the code, clear it once fixed.

P0455 · EVAP leak

0–60 timer

Time your 0–60 before and after switching modes.

0–60 mphBeforeAfter

Virtual dyno

A horsepower and torque curve from a second-gear pull.

HorsepowerTorque2nd gear

An estimate for comparing runs on your car.

And it tunes. A gauge display that adds power.

A calibration for your exact engine and year. Unplug it and the car is stock. Everything Monte GTR does →

Up to+20%*Turbo
Up to+12%*Naturally aspirated
Up to+10%*Hybrid

7 modes + Stock

RaceRace PlusRace MaxSportSport Plus

Performance modes

EconomyEconomy Plus

Up to 5% better mpg*

Stock

Factory settings

*Real-world results may be less or more: they depend on the engine, fuel, altitude and how the car is driven.

Choosing an OBD2 gauge display: display only, tuner, or both?

A gauge-only display shows data. To add power you’d buy a tuner too — and share one OBD-II port between them.

FeatureGauge-only displayGauge display + separate tunerMonte GTR
Live gaugesYesYesYes
Read / clear codesUsuallyUsuallyYes
0–60 timer, dyno estimateSome modelsSome modelsYes
Adds powerNoYesYes, 7 modes
Devices in the OBD-II port12 (splitter or swapping)1
Installing Monte GTR car tuner device

Installs in minutes. Unplugs as easily.

The OBD-II port is under your dash. No tools, no wiring, no ECU flashing.

01
Plug Monte into the OBD-II port
02
Pick your car in the GTR Programmer
03
Drive. Unplug any time to go back to stock

Works with OBD-II cars — US 1996 and newer, EU 2001 and newer.

Watch installation guide
Watch installation guide

Boost your car with Monte GTR

Monte GTR$399
$399
From $33.25/mo with

Subject to eligibility and approval. Payment options may vary

Performance tuning
Fuel economy tuning
Touchscreen controlled
Vehicle diagnostics
Acceleration meter
Virtual dyno

What’s in the box?

Monte GTR · OBD2 cable, 5 ft · Magnet mount with suction cup · USB cable

Calibrated for your engine · 30-day returns · Lifetime warranty

Will it fit my car?

Monte GTR works on OBD-II vehicles: US 1996 and newer. Gasoline, diesel and many hybrids; manual, automatic, DSG and CVT. Each engine needs its own calibration, so check your car first.

All supported cars

Buy with confidence. We’ve got you covered.

Free shipping. Worldwide from Little Rock, Arkansas.

30 days to try it. Not the right fit? Full refund.

Lifetime warranty. Covered for the life of the product.

Frequently asked questions

Yes. Choose Stock mode and the car runs on factory settings; gauges, the code reader, the 0–60 timer and the dyno keep working.
Speed, RPM, coolant temperature and battery voltage on the main dial, plus four readings you choose, such as boost, fuel pressure or throttle angle. The list depends on what your car’s ECU reports.
Monte GTR works on OBD-II vehicles: US 1996 and newer, gasoline, diesel and many hybrids. Each engine needs its own calibration, so check your car first. Find your car →
No. Monte GTR sits on its magnet mount with a suction cup, right on your dash — a digital dash display with no gauge pod or pillar mount to install.
Yes. It reads stored trouble codes with a description and clears them.
It’s estimated from OBD-II engine data during a second-gear pull. Use it to compare runs on your car, not as a certified number.
No. It plugs into the OBD-II port. Unplug it and the car is back to stock.
Monte GT ($279) tunes the engine and is controlled from your phone. Monte GTR ($399) adds its own touch screen with gauges, a code reader, a 0–60 timer and a virtual dyno. Compare →
Need it without a screen? Monte GT · $279 →