The N55 single turbo motor is available as the 35I variant in most all BMW platforms. The same 306hp found in the 335I is also found in cars or SUVs like the BMW X3. To boost the power and performance of this turbocharged engine, there is 2 ways. You can do an ECU flash on the vehicle by removing the ECU and mailing it in to be bench flashed, or you can do one of the plug and play tuning box kits. The Tuning Box Kits tap into your vehicles manifold pressure, boost pressure, and camshaft sensor. The Tuning Box features a microprocessor that controls the signals and gives your 35I X3 engine over 40 horsepower to the wheels. Since the Tuning Box is plug and play, they are really simple to install and can be removed for even the most basic warranty work without cutting or tampering with the engine. This customers black X3 is now enjoying all the performance improvements that the VR Tuned Tuning Box Kit has to offer!
Shop all BMW ECU Tuning Box Upgrades Here
