ECU Tune for BMW 335i E90 (2005-2010)
(N54 3.0L Inline-6 Turbocharged) 
 
335i N54 Tuning Potential:
 
Stock power and gains vary based on conditions and state of the vehicle.
 
- - STOCK HP & TQ - -
306 HP / 295 FT-LB (400 Nm)
 
- - STAGE 1 - -
370 HP / 369 FT-LB (500 Nm)
Can be performed on stock 335i
 
- - ZF6HP TCU Tuning - - [+$349]
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 N54 engine is a 3.0-liter inline-six engine that was first introduced in 2006. It was fitted in a range of BMW models, including the 135i, 335i, 535i, and X6, among others. The engine is known for its impressive power output and smooth performance, thanks in part to its twin-turbo induction. Overall, the BMW N54 engine is a popular choice for car enthusiasts looking for a powerful and reliable engine that can be tuned for even greater performance.
 
The ZF 6HP is an 6-speed Hydraulic system Planetary gear automatic transmission. The ZF HP transmissions are 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 6HP was first introduced in 2000 and was a popular choice among car enthusiasts for its lighter nature, broad gear ratios, reliable performance capabilities, and fuel efficiency.
 
There are several reasons why you might consider BMW N54 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.