When you bring your vehicle to WestTuned Car Mechanic Center, you can rest easy knowing that your vehicle is in professional hands.
428i | 245 HP -> 0 HP
The BMW 4 Series 428i is an exceptional platform — and with Westtuned custom ECU software, you can unlock performance that the factory left on the table. Our team of experienced calibrators fine-tune every parameter to maximize power output, throttle response and torque delivery.
Built on thousands of hours of dyno time and real-world testing, our Stage 1 software for the BMW 4 Series 428i targets safe boost levels, optimised ignition timing and refined fuel maps for a power delivery that inspires confidence.
Our calibrations are compatible with both stock vehicles and those equipped with aftermarket hardware — intakes, intercoolers, exhausts and more — ensuring maximum performance at every stage of modification.
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Order your BMW 4 Series 428i tuning file from Westtuned today and discover what your engine is truly capable of.
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