Description
This quick install plug and play tuner connects to easy to reach plugs on top of the engine and safely increases turbocharger output by 3-6psi producing significant power and torque increases. Timing and fueling are appropriately rescaled for the increased boost and the installation is completely reversible in seconds. Compatible with all wheel drive and rear wheel drive models. The JB4 is the only tuning system that includes CANbus and optional BCM connections providing dramatically improved performance and smoothness over other 2-channel tuning systems.
Power gains are up to 50whp for the C300, up to 60whp for the C400/C450, and up to 70whp for the C43. On racing fuel or E85 mixtures even higher gains are possible.
Note 2019+ C300 models have changed to new SENT pressure sensors and require a unique JB4 system. Right now we believe all other 2019+ systems, C400, C450, C43, etc, continue to use the older pressure sensors but expect they will also migrate over at some point in the future. We'll update the model year compatibility details as we receive them. M264
Please be sure to visit JB4tech.com for the latest map guide, firmware updates, installation directions, and notes: https://www.jb4tech.com/forum/model-specific-engine-tuning-modification-discussion/mercedes-c250-c300-c43-amg/3466-mercedes-c300-c400-c450-c43-w205-jb4
Wirelessly connect the JB4 to your Bluetooth 4.0 compatible iOS and Android device via the JB4 Mobile connect kit, or to your Windows laptop with the BMS data cable. Both options allow you to record and analyze vehicle and tuning data, change JB4 performance maps, and update JB4 firmware as we release free newer versions with updates, more powerful maps, and new features under development. Separate JB4 Mobile app purchase is also required.
Mercedes-Benz Vehicle Fitment
A-Class
• 2018-Present Mercedes-Benz A250 W177
• 2018-Present Mercedes-Benz A220 W177
B-Class
• 2014-Present Mercedes-Benz B250
C-Class
• 2014-Present Mercedes-Benz CLA 250 C117
• 2015-Present Mercedes-Benz CLS 400 W218
• 2015-Present Mercedes-Benz C200 W205
• 2015-Present Mercedes-Benz C200 W205
• 2015-Present Mercedes-Benz C250 W205
• 2015-Present Mercedes-Benz 2018 C300 W205
• 2014-Present Mercedes-Benz C400 W205
• 2015-Present Mercedes-Benz C43 AMG W205
• 2015-Present Mercedes-Benz C450 W205
E-Class
• 2016-Present Mercedes-Benz E300 W212
• 2017-Present Mercedes-Benz E300 W213
• 2015-Present Mercedes-Benz E400 W212
• 2015-Present Mercedes-Benz E43 AMG W212
G-Class
• 2016-Present Mercedes-Benz GLE 250, 300, 350, 43 AMG
• 2016-Present Mercedes-BenzGLC 250, 300, 43 AMG
• 2015-Present Mercedes-Benz GLA 250
S-Class
2017-Present Mercedes-Benz SLC 43
ML-Class
• 2015-2019 Mercedes-Benz ML 400
V-Class
• 2016-Present Mercedes-Benz Metris Van W447
• 2016-Present Mercedes-Benz V-Class Van W447
• 2016-Present Mercedes-Benz Valente Van W447
• 2016-Present Mercedes-Benz Viano Van
C300 Dyno Charts
C450 with BMS Stage 1
