Polaris builds its whole off-road range on Bosch ECUs, from the Sportsman quad to the RZR Pro R. Turbo RZRs respond strongly to boost and ignition, and almost every model has a speed limit that customers want raised for competition and private land. Here is which ECU is in which Polaris, what we supply and how to order.
Key facts
- ECUs: Bosch ME17.9.74 (198 software versions in our database), Bosch M17.8.7 (38), Bosch MG1CA007 (12), plus Bosch M7.4.4 / ME7.4.4 / ME7.9.7 on older models.
- Models: RZR (incl. Turbo, Pro XP, Pro R), General, Ranger, Sportsman, Scrambler, Xpedition.
- Solutions: Stage 1, Stage 2 on selected models, RPM limit increase, Vmax, DTC off.
- Stage 1 example: RZR Pro R 2.0T 225 → 255 hp.
Which ECU is in your Polaris
| ECU | Fitted to | Software versions |
|---|---|---|
| Bosch ME17.9.74 | RZR Turbo XP 1000, RZR XP 1000, RZR 900, Ranger XP 900, Ranger 570, Sportsman XP 1000 | 198 |
| Bosch M17.8.7 | Ranger 800, RZR 800, RZR XP 900, RZR 570, Sportsman 570 | 38 |
| Bosch MG1CA007 | RZR Pro R, RZR XP 1000 (latest), Xpedition, Ranger XP 1000 | 12 |
| Bosch M7.4.4 / ME7.4.4 / ME7.9.7 | Older models: FST / FS 750, Sportsman 850 | 11 |
The most covered models in our Polaris solutions database are the RZR Turbo XP 1000 (40 software versions), Sportsman 570 (25), Ranger XP 1000 (24), Ranger 570 and General 1000 (16 each).
What we supply for Polaris
- Stage 1: fuel, ignition, torque limits and, on turbo models, boost.
- Vmax: the factory speed limit removed or raised.
- RPM limit: raised within the safe range of the engine.
- DTC off: single fault codes switched off cleanly.
- Stage 2: for intake, exhaust and turbo upgrades, on selected models.
Stage 1 figures
| Model | Power | Torque |
|---|---|---|
| RZR Pro R 2.0T | 225 → 255 hp | — |
| RZR Turbo R / Pro XP (0.9T) | 181 → 195 hp | — |
| RZR XP Turbo S | 168 → 180 hp | 155 → 175 Nm |
| RZR XP Turbo / XP 4 Turbo | 144 → 155 hp | 145 → 165 Nm |
| RZR 1000 XP / XP 4 | 114 → 120 hp | — |
All models are listed in the Polaris tuning catalogue.
How to order a Polaris file
- Log in at fs.auto-remap.com or create a workshop account.
- Pick the Polaris model and upload the full original read.
- Tick Stage 1, Vmax, RPM limit or DTC off.
- Receive the file, checksum corrected and ready to flash.
File service for professional tuners and powersports workshops.
FAQ
Can the Polaris RZR speed limit be removed?
Yes. The Vmax option removes or raises the factory speed limit, on its own or with Stage 1.
How much power does Stage 1 add on a turbo RZR?
From about 11 hp on the XP Turbo to 30 hp on the RZR Pro R 2.0T.
Do you also tune Ranger, General and Sportsman?
Yes, on ME17.9.74, M17.8.7 and MG1CA007, with the same options.
Power figures are catalogue values for stock vehicles. Speed limiter modifications are supplied for off-road, racing and private-land use only, where permitted. It is the customer's responsibility to comply with local legislation.