CT Tuning ECU Flash BMW 8 Series 840i 335hp G15
$800.00
- Description
- Additional information
Description
Experience a complete performance upgrade for your BMW 8 Series 840i 335hp G15 with a custom CT Tuning ECU Flash. This high-performance software recalibrates the B58 3.0L turbocharged engine, delivering significantly more power and a more aggressive driving experience.
Crank Horsepower Ratings:
- Stock Power: 340hp | 332ft/lbs
- Tuned Power: 440hp | 458ft/lbs
ECU Flash Options:
- Vmax Off: Increase or remove the factory speed limiter.
- Race Exhaust: Calibration optimized for full race exhaust systems.
- Pops & Bangs: Creates exhaust detonation on throttle release. Requires full race exhaust system.
- Cold Start Off: Disables the cold start high-idle system.
- Sport Display: Updates gauges to show increased horsepower and torque.
Why Choose CT Tuning?
- World-class customer service and support.
- Proven software used globally for various environments.
- Reversible to factory settings in most cases.
- Compatible with basic bolt-on performance parts.
- Automatic adaptation for higher octane fuels.
How to Flash Your ECU?
- This process requires a bench flash. Remove the ECU and ship it to our facility. We will back up your software, apply the tune, and return the unit via your chosen shipping method.
ECU Reference:
- Bosch MG1CS201
- ZF 8HPxx
Vehicle Fitment:
- BMW 8 Series 840i G15 (B58 Engine)
Product Notes:
- Power ratings are converted from PS/NM and may vary slightly from advertised figures.
- Tuning must be used within 6 months of purchase.
- Support is available for 30 days after file delivery.
- Future modifications if supported or OEM software updates require a $350 file service fee.
- No refunds once software is issued or locked to a vehicle.
- Emissions readiness is not forced; original files are provided for return to stock.
Additional information
| Weight | 5 lbs |
|---|---|
| Dimensions | 13.25 × 11.5 × 2.38 in |
| Make | BMW |
| Model | 840i |
| Product Year | 2019, 2020, 2021, 2022 |
CT Tuning software is purchased with the intention of using these products for Racing Competition Only. As the authorized purchasing party, you understand that some or all of these parts may not comply with Federal, State, Province, and/or Local laws, ordinances, and regulations. As the buyer, you take responsibility to ensure that any modifications or upgrades that have been done to your vehicle conform to all applicable laws and regulations for road use, especially pertaining to safety and emissions. To make a purchase, you will be required to sign a waiver acknowledging that these products are intended for Racing Competition Only and not meant to be used on a road car.