Chip Tuning Mazda 3 I (2003–2009)
10 engines · +10 to +33 hp
3 I: 10 engines — 8 petrol and 2 diesel. Gains range from +10 to +33 hp, with up to +80 Nm of torque. GAN GTL from 219 EUR, GAN GT from 329 EUR. GAN GA+ from 189 EUR.
All 3 I engines: exact gains
STOCK output, output with GAN, gain and price for each module. Diesel and petrol engines are listed separately.
| Engine | STOCK → with GAN | Gain | Tuning modules and prices | |
|---|---|---|---|---|
| Diesel · 2 engines | ||||
| 1.6 MZ-CD109 hp / 240 Nm | +33 hp+72 Nm |
GTL — 219 EUR · 137 hp GT — 329 EUR · 142 hp |
Select → | |
| 2.0 MZR-CD143 hp / 360 Nm | +30 hp+80 Nm |
GTL — 219 EUR · 169 hp GT — 329 EUR · 173 hp |
Select → | |
| Petrol · 8 engines | ||||
| 1.6 MZ-CR90 hp / 215 Nm | +27 hp+65 Nm |
GTL — 219 EUR · 113 hp GT — 329 EUR · 117 hp |
Select → | |
| 2.3T171 hp / 210 Nm | +21 hp+25 Nm |
GA — 189 EUR · 192 hp GA+ — 189 EUR · 192 hp |
Select → | |
| MPS 2.3T260 hp / 380 Nm | +21 hp+30 Nm |
GA — 199 EUR · 281 hp GA+ — 199 EUR · 281 hp |
Select → | |
| 2.5i167 hp / 228 Nm | +20 hp+27 Nm |
GA — 189 EUR · 187 hp GA+ — 189 EUR · 187 hp |
Select → | |
| 2.3i156 hp / 203 Nm | +19 hp+24 Nm |
GA — 189 EUR · 175 hp GA+ — 189 EUR · 175 hp |
Select → | |
| 2.0i148 hp / 187 Nm | +18 hp+22 Nm |
GA — 189 EUR · 166 hp GA+ — 189 EUR · 166 hp |
Select → | |
| 2.0i150 hp / 186 Nm | +18 hp+22 Nm |
GA — 189 EUR · 168 hp GA+ — 189 EUR · 168 hp |
Select → | |
| 1.4i80 hp / 124 Nm | +10 hp+15 Nm |
GA — 189 EUR · 90 hp GA+ — 189 EUR · 90 hp |
Select → | |
Each engine has its own tuning module: GAN GT / GTL or GAN GA / GA+. Prices are per tuning module and include the current discount.
Not sure which engine you have?
The badge alone is not enough: in this generation, the same engine designation came in different power outputs, each with its own calibration. Check the power output in your registration document and find the matching row.
Same badge, different factory power outputs in this generation:
Mazda 3 I tuning: what changes
The tuning module sits between the sensors and the engine control unit (ECU) and adjusts their signals. Your manufacturer’s warranty is preserved: the ECU software is never changed, and the module can be removed at any time.
- Bluetoothsmartphone mode control
- 18 mappingsfine tuning for your engine

- 15 minutesfitted to the factory connectors
- IP67water and dust protection
- +33 hpbest in this generation
1.6 MZ-CD 109 hp → 142 hp. The other engines gain from +10 hp; see the table for each one.
- +80 Nmfor diesels
Diesels gain mainly torque: +72 to +80 Nm.
- up to +12%with the GAN GA+ on naturally aspirated engines
For 5 naturally aspirated engines: GAN GA / GAN GA+ tuning modules; see the table for each engine’s figure.
- 50 daystest drive
Enhanced performance or your money back, excluding delivery costs.
What Mazda 3 owners say about GAN
Five minute fitting. Immediately obvious performance change (improvement). Improve the documentation/description about how to use the custom/adjustment mode(s).
Very fast post, very easy to install. Like everyone trying out a product like this I was a bit unsure what to expect, as there is a lot of debate online on the effectiveness of the application, or is ecu tuning better. Regards ECU tuning I don't know what the answer is, but regards the GAN unit, I can't say I was very…
Mazda 3 I chip tuning: questions
Which tuning module do I need for the 3 I?
Find your engine in the table above: each row shows the module and the price.
Is a tuning module the same as a Stage 1 tune?
Not quite. Stage 1 usually means an ECU remap without replacing any parts. The tuning module also works without replacing parts, but it does not change the ECU software: it adjusts the sensor signals, comes off in about a minute, and the OFF button in the app restores the factory settings.