Your Vehicle
BMW 3 serie 323i 170hp
Technical Specifications
Power and torque increase
Stage 1: software remap only, no mechanical changes, fully reversible.
Power HP
Torque Nm
Book your Stage 1 remap
499 € VAT included · pay online, the work is done at the workshop you choose
Power Graph
BMW 3 serie 323i 170hp: da 170 a 185HP
Remapping BMW 3 serie
MasterTuning is a leader in developing remapping for BMW. La BMW 3 serie 323i 170hp può passare da 170 HP a 185 HP con un incremento di 15 HP.
The development of each remap is customized by MasterTuning.
- 100% tested and customized files guarantee
- Tested and developed on a 4x4 dyno
- Best performance, within safety margins
- Reduced fuel consumption
ECU Remapping Details BMW 3 serie 323i 170hp
The BMW 3 serie 323i 170hp is equipped with a petrol engine that produces 170 HP and 245 Nm of torque in its factory configuration. With MasterTuning's professional ECU remapping, this BMW can achieve 185 HP (+9%) and 260 Nm (+6%).
Our Stage 1 tuning for the 3 serie E36 delivers an impressive gain of +15 HP and +15 Nm, optimizing the petrol engine's performance while maintaining reliability and staying within safe parameters.
The engine code M52B25 identifies this specific powerplant configuration. The Siemens/Continental MS41 ECU is professionally recalibrated to unlock hidden potential while preserving engine longevity.
The 3 serie's petrol engine benefits significantly from professional ECU calibration. The result is a more responsive, enjoyable driving experience with improved power delivery throughout the rev range.
Technical Specifications — BMW 3 serie 323i 170hp
Factory technical data for the BMW 3 serie 323i 170hp (E36), used by MasterTuning engineers to develop a tailored, dyno-tested remap for this specific powerplant.
| Engine code | M52B25 |
|---|---|
| ECU / Control unit | Siemens/Continental MS41 |
| Fuel | Petrol |
| Compression ratio | 10.5 |
| Bore × stroke | 84.0 X 75.0 mm |
| Stock power | 170 HP · 245 Nm |
| Remapped power (Stage 1) | 185 HP (+15) · 260 Nm (+15) |
Don't want to touch the ECU?
Rapid Dimsport add-on modules connect to the engine sensors with original connectors: they fit in a few hours and come off without a trace, leaving the factory software untouched. Useful on a leased car, one still under warranty or one you plan to sell soon. Check which ones fit your BMW 3 serie.
Frequently Asked Questions - BMW 3 serie
How much power can I gain from remapping my BMW 3 serie?
With MasterTuning Stage 1, your BMW 3 serie 323i 170hp can gain +15 HP (from 170 to 185 HP) and +15 Nm of torque. This represents a 9% increase in power.
Is ECU remapping safe for the BMW 3 serie engine?
Yes, MasterTuning's remapping for the BMW 3 serie 323i 170hp is developed within safe parameters. All calibrations are tested on our 4x4 dyno and stay within the mechanical limits of the M52B25 engine.
Is the BMW ECU remapping reversible?
Absolutely. The original factory calibration of your BMW 3 serie is always backed up before remapping. The process is 100% reversible at any time.
Will remapping affect my BMW warranty?
ECU remapping may affect your manufacturer warranty. We recommend checking your specific warranty terms. Many of our customers choose to remap after the warranty period or accept this trade-off for the significant performance gains.
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Book your remap or ask for a quote
Stage 1 can be bought online and is done at the workshop you choose; for Stage 2 we send you a quote.
Stage 2 is quoted on request: write to us and we will reply with price and timing.
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