BMW 3 serie 320si 173bhp tuning file
E90/E91 (2005–2010) · Petrol · ECU: Bosch MEV946
Stage 1 remap: +12 bhp & +20 Nm
ECU
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Available solutions
With a bespoke remap the BMW 3 serie 320si 173bhp gains +12 bhp and +20 Nm, rising from 173 bhp / 200 Nm to 185 bhp / 220 Nm (7% more power). We build each tuning file around the software number of your read on the Bosch MEV946, so nothing generic goes back into the car. Add DECAT, DTC Removal, FLAPS, Pop & Bang Crackle map to the same file if needed.
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. 173 → 185 bhp equals roughly 129 → 138 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 | 1995 CC |
| Compression ratio | 12.0 : 1 |
| Bore × stroke | 84.0 X 90.0 mm |
| Engine code | N45B20A |
Other BMW 3 serie E90/E91 (2005–2010) engines
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