Your Vehicle
BMW 8 serie GC 840i 333hp
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 8 serie GC 840i 333hp: da 333 a 420HP
Remapping BMW 8 serie GC
MasterTuning is a leader in developing remapping for BMW. La BMW 8 serie GC 840i 333hp può passare da 333 HP a 420 HP con un incremento di 87 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 8 serie GC 840i 333hp
The BMW 8 serie GC 840i 333hp is equipped with a petrol engine that produces 333 HP and 500 Nm of torque in its factory configuration. With MasterTuning's professional ECU remapping, this BMW can achieve 420 HP (+26%) and 620 Nm (+24%).
Our Stage 1 tuning for the 8 serie GC 2022 -> ... delivers an impressive gain of +87 HP and +120 Nm, optimizing the petrol engine's performance while maintaining reliability and staying within safe parameters.
The engine code B58B30 identifies this specific powerplant configuration.
With 333 HP from factory, this BMW 8 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 8 serie GC 840i 333hp
Factory technical data for the BMW 8 serie GC 840i 333hp (2022 -> ...), used by MasterTuning engineers to develop a tailored, dyno-tested remap for this specific powerplant.
| Engine code | B58B30 |
|---|---|
| Fuel | Petrol |
| Compression ratio | 11.0 |
| Bore × stroke | 82.0 X 94.6 mm |
| Stock power | 333 HP · 500 Nm |
| Remapped power (Stage 1) | 420 HP (+87) · 620 Nm (+120) |
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 8 serie GC.
Frequently Asked Questions - BMW 8 serie GC
How much power can I gain from remapping my BMW 8 serie GC?
With MasterTuning Stage 1, your BMW 8 serie GC 840i 333hp can gain +87 HP (from 333 to 420 HP) and +120 Nm of torque. This represents a 26% increase in power.
Is ECU remapping safe for the BMW 8 serie GC engine?
Yes, MasterTuning's remapping for the BMW 8 serie GC 840i 333hp is developed within safe parameters. All calibrations are tested on our 4x4 dyno and stay within the mechanical limits of the B58B30 engine.
Is the BMW ECU remapping reversible?
Absolutely. The original factory calibration of your BMW 8 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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