ECU Tune for BMW 340i F3x (2015-2019)
(B58 3.0L Inline-6 Turbocharged) 
(Bosch MG1CS003 ECU/DME)
 
340i B58 Tuning Potential:
 
*Numbers will be higher on 340i with M Performance Power and Exhaust Kit
Stock power and gains vary based on conditions and state of the vehicle.
 
- - STOCK HP & TQ - -
322-355HP / 332-369 FT-LB *
 
- - STAGE 1 - - 
375 HP / 418 FT-LB (566 Nm) *
Can be performed on stock 340i
 
- - STAGE 1+ - - [+$150]
420 HP / 450 FT-LB (610 Nm) *
Can be performed on stock 340i
 
- - STAGE 2 - - [+$300]
440 HP/ 480 FT-LB (650 Nm) *
Requires 340i Mods:
Catless Downpipes
Spark plugs upgrade
High flow intake
Transmission tune
 
- - ZF8HP TCU Tuning - - [+$449]
BMW Transmission Tuning:
- Increased torque through all RPMs,
- Noticably Smoother Shifts and Acceleration
- Custom shift patterns to match your driving needs
Can be done with any Stage of Tuning!
 
 
The BMW B58 engine is a 3.0-liter inline-six engine that was first introduced in 2015. It is used in a variety of BMW models, including the BMW 740i, BMW M240i, and BMW 440i. The engine is known for its smoothness, power, and efficiency, making it a popular choice for BMW enthusiasts.
 
The ZF 8HP is an 8-speed Hydraulic system Planetary gear automatic transmission. It is still used in a wide range of high end car models, including: Aston Martin, most BMW Serie, Audi, Rolls-Royce, Toyota Supra, and many more. The ZF 8HP was first introduced in 2009 and is a popular choice among car enthusiasts for its smooth and responsive shifting, excellent fuel efficiency, and reliable performance capabilities.
 
There are several reasons why you might consider BMW B58 tuning, including:
 
- Increase Horsepower & Torque: The most noticable benefits of tuning your ECU is the increase in horsepower and torque. Even without aftermarket modifications, you can see a significant improvement in your engine's performance, resulting in faster acceleration and a more engaging driving experience.
 
- Improve Fuel Efficiency: While more HP and TQ is often the primary goal of tuning, many tuning parameters can also result in improved fuel efficiency. By optimizing the engine's performance, you can reduce the amount of fuel needed to accelerate and cruise, saving you money at the pump.
 
- Enhanced Reliability: By addressing common issues from the factory and making the engine more efficient, you can reduce the risk of breakdowns and extend the life of your vehicle.