BMW 5 Series523i 174 bhp
Available Services
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Model
BMW 5 Series
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Variant
523i 174 bhp
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Years
2003-2009
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Fuel
Petrol
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Engine Size
2497
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ECU Type
Siemens MSV80
Celtic Tuning’s fuel economy software is designed for part throttle driving to deliver a very linear power curve.
For this reason Celtic Tuning’s economy performance figures quoted are subject to slight variation.
| Original | Modified | Difference | |
|---|---|---|---|
174bhp | 190bhp | +16bhp | |
169lb/ft | 185lb/ft | +16lb/ft |
Stage Notes
The stage 1 software on this vehicle is designed for use with standard components and within tolerances.
This is classed as Celtic Tuning’s fast road application which is the best all round performance for stock vehicles.