Your Vehicle
BMW 4 serie GC 430i 245hp
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 4 serie GC 430i 245hp: da 258 a 310HP
Remapping BMW 4 serie GC
MasterTuning is a leader in developing remapping for BMW. La BMW 4 serie GC 430i 245hp può passare da 258 HP a 310 HP con un incremento di 52 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 4 serie GC 430i 245hp
The BMW 4 serie GC 430i 245hp is equipped with a petrol engine that produces 258 HP and 400 Nm of torque in its factory configuration. With MasterTuning's professional ECU remapping, this BMW can achieve 310 HP (+20%) and 470 Nm (+18%).
Our Stage 1 tuning for the 4 serie GC G22 - 2021 -> delivers an impressive gain of +52 HP and +70 Nm, optimizing the petrol engine's performance while maintaining reliability and staying within safe parameters.
The engine code B48B20B identifies this specific powerplant configuration.
With 258 HP from factory, this BMW 4 serie GC is already a performance vehicle. Our remapping extracts even more potential, delivering exhilarating acceleration and enhanced driving dynamics for enthusiasts who demand the best.
Technical Specifications — BMW 4 serie GC 430i 245hp
Factory technical data for the BMW 4 serie GC 430i 245hp (G22 - 2021 ->), used by MasterTuning engineers to develop a tailored, dyno-tested remap for this specific powerplant.
| Engine code | B48B20B |
|---|---|
| Fuel | Petrol |
| Compression ratio | 10.2 |
| Bore × stroke | 82.0 X 94.6 mm |
| Stock power | 258 HP · 400 Nm |
| Remapped power (Stage 1) | 310 HP (+52) · 470 Nm (+70) |
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 4 serie GC.
Frequently Asked Questions - BMW 4 serie GC
How much power can I gain from remapping my BMW 4 serie GC?
With MasterTuning Stage 1, your BMW 4 serie GC 430i 245hp can gain +52 HP (from 258 to 310 HP) and +70 Nm of torque. This represents a 20% increase in power.
Is ECU remapping safe for the BMW 4 serie GC engine?
Yes, MasterTuning's remapping for the BMW 4 serie GC 430i 245hp is developed within safe parameters. All calibrations are tested on our 4x4 dyno and stay within the mechanical limits of the B48B20B engine.
Is the BMW ECU remapping reversible?
Absolutely. The original factory calibration of your BMW 4 serie GC 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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