Thanks to our Tuning Box Evolution 5087 powerchip , your Bmw Serie 4 will have more power (+37 hp) and more dynamism (+60 Nm). Your petrol 420i 184 hp engine will have a total power of 221 hp* and a torque of 350 Nm*. Moreover, your fuel consumption will decrease by around -1L./100km*.
Tuning Box offers a 2-year engine warranty with this ECU tuning box.
Your engine with our Tune Pedal P13702 responds more spontaneously and more directly. This pedal box optimizes your engine response time by eliminating the latency . The result is that the power of your engine is released faster. This way your acceleration is much more direct.Read more
The Tuning Box Fusion is the combination of these two chiptuning units. This wonderful product provides an amazing driving experience and great performance. You will not recognize your Bmw Serie 4 anymore!
These plug-and-play performance chips especially developed for this petrol 420i 184 hp engine work as a custom engine reprogramming. Thanks to the supplied AMP plugs, these chiptuning units can be easily connected and they scrupulously respect the power reserves and motor protection systems of the german manufacturer.
Fast delivery, had an initial issue with one of the connections, but 1 phone call and a technical email later all resolved., I have tried racechip previously but I am more impressed with this company.
I am very satisfied with the TuningBox Fusion, this optimization pack is really prodigious! Serious and very professional company.
Good communication and double check regarding the motor type of my BMW by TuningBox. Fast delivery of the box. Everything is working fine without any warninglight. Power increase is very noticeable.
You should send a tracking number. I ordered as express and it took 10 days to arrive and i couldnt track it.
Good Product. I find hard to attached controller somewhere near the dashboard due to lack of double side sticker.