BMW 4 serie 428i 245hp
Stage 1 chip tuning
Petrol turbo · F32/33 - 2013 - 2016 · Bosch DME841 · N20B20A
Stage 1 Results
* Values are approximate. Contact us for a precise calculation.
Technical Information
About the remap
Stage 1 chip tuning for the BMW 4 serie 428i 245hp increases power from 245 to 281 hp (+36 hp, +15%) and torque from 350 to 430 Nm. Turbocharged petrol engines respond exceptionally well to ECU optimization – adjusting ignition timing, boost pressure, and fueling maps unlocks the hidden potential built in by the manufacturer.
The remap is performed on the Bosch DME841 ECU (engine code N20B20A) via the OBD2 diagnostic port – no ECU removal required. We use Alientech KESSv2, Autotuner Autotuner, ByteShooter Toolbox and other professional tools. Results are verified with a dynamometer measurement.
In addition to Stage 1, we offer the following services for the BMW 4 serie 428i 245hp: XHP gearbox tuning. All work is performed using professional equipment (ZF 8HP45 gearbox).
Every vehicle undergoes full diagnostics before and after the remap. We keep a backup of the original ECU calibration and guarantee the option to revert to stock settings at any time. JVK PRO is a professional chip tuning service in Riga with 16 years of experience.
Available services
FAQ
How much does Stage 1 chip tuning cost in Riga?+
Stage 1 chip tuning at JVK PRO in Riga costs from €200 including VAT; with dyno tuning and measurements – from €350. We confirm the exact price for your engine before starting.
Is Stage 1 safe for the engine?+
Yes. Stage 1 is an optimization within factory safety margins. The remap is done via the OBD2 diagnostic port without opening the ECU. Results are verified on our dynamometer.
How long does it take?+
Usually 2 to 4 hours, including diagnostics, remapping, and a dyno verification run.
Can the original software be restored?+
Yes, we keep a backup of your original ECU file. Reverting to stock is possible at any time.
Book Stage 1
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