Subaru WRX 2.5 STi 300bhp tuning file
2015 (2017) · Petrol · ECU: Denso SH7058 GW / Hitachi SH72543
Stage 1 remap: +30 bhp & +60 Nm
ECU
Read methods
Available solutions
Our Stage 1 tuning file takes the Subaru WRX 2.5 STi 300bhp from 300 bhp and 407 Nm to 330 bhp and 467 Nm – that's +30 bhp (10%) and +60 Nm more. The remap file is written by a calibrator for your exact software on the Denso SH7058 GW / Hitachi SH72543 and returned through the portal, normally within 5–15 minutes. Solutions such as DECAT, DTC Removal, Vmax can go into the same file.
Who is this remap for?
Naturally aspirated petrol engines gain less than turbo engines, but a remap still improves throttle response and smooths out flat spots in the power delivery. 300 → 330 bhp equals roughly 224 → 246 kW.
Figures are guide values from our rolling road and comparable vehicles. Results depend on the vehicle's condition, hardware and fuel quality. Remapping in the UK: let your insurer know about the modification. DPF, EGR and AdBlue solutions are supplied for off-road and motorsport use only and are not legal for use on UK roads.
Engine specification
| Fuel type | Petrol |
| Engine size | 2457 CC |
| Compression ratio | 8.2 : 1 |
| Bore × stroke | 99.5 X 79.0 mm |
| Engine code | EJ25 |
Other Subaru WRX 2015 (2017) engines
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