BMW Z4 2.5i 177bhp tuning file
E85 (2003–2008) · Petrol · ECU: Siemens/Continental MS45 / Siemens/Continental MSV70
Stage 1 remap: +16 bhp & +25 Nm
ECU
Read methods
Available solutions
Upload the original read of your BMW Z4 2.5i 177bhp and we'll return a Stage 1 tuning file worth 193 bhp and 255 Nm – up from 177 bhp and 230 Nm, an increase of +16 bhp (9%) and +25 Nm. Every file is checked by a calibrator on the Siemens/Continental MS45 / Siemens/Continental MSV70 before release, and DECAT, FLAPS, Vmax can be combined in one upload.
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. 177 → 193 bhp equals roughly 132 → 144 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 | 2497 CC |
| Compression ratio | 11.0 : 1 |
| Bore × stroke | 82.0 X 78.8 mm |
| Engine code | N52B25A |
Other BMW Z4 E85 (2003–2008) engines
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