BMW
BMW 4 Series GC Chip Tuning
How much bhp does BMW 4 Series GC chip tuning add? The list below shows 21 engine options with the gain for each. Click your engine.
How much bhp does BMW 4 Series GC chip tuning add?
Average Stage 1 gain +22%; highest gain +66 bhp (420i 184hp).
ECU solutions for the BMW 4 Series GC
BMW 4 Series GC AdBlue fault solutionBMW 4 Series GC DPF fault solutionBMW 4 Series GC EGR fault solutionBMW 4 Series GC Pop & Bang tuning
BMW 4 Series GC: Stage 1 by engine
Choose your engine
Year / chassis: F36 - May/2016+
| Engine | Power | Gain |
|---|---|---|
| 418D 150hp | 150 → 190 bhp | +40 bhp |
| 418i 136hp | 136 → 170 bhp | +34 bhp |
| 420D 190hp | 190 → 220 bhp | +30 bhp |
| 420i 184hp | 184 → 250 bhp | +66 bhp |
| 425D 224hp | 224 → 270 bhp | +46 bhp |
| 430D 258hp | 258 → 310 bhp | +52 bhp |
| 430i 252hp | 252 → 280 bhp | +28 bhp |
| 435D 313hp | 313 → 360 bhp | +47 bhp |
| 435i 306hp | 306 → 370 bhp | +64 bhp |
| 440i 326hp | 326 → 392 bhp | +66 bhp |
Year / chassis: F36 - 2014 - 2016
| Engine | Power | Gain |
|---|---|---|
| 418D 136hp | 136 → 180 bhp | +44 bhp |
| 418D 143hp | 143 → 190 bhp | +47 bhp |
| 418D 150hp | 150 → 190 bhp | +40 bhp |
| 420D 163hp | 163 → 220 bhp | +57 bhp |
| 420D 184hp | 184 → 220 bhp | +36 bhp |
| 420i 184hp | 184 → 250 bhp | +66 bhp |
| 428i 245hp | 245 → 280 bhp | +35 bhp |
| 430D 258hp | 258 → 310 bhp | +52 bhp |
| 435D 313hp | 313 → 365 bhp | +52 bhp |
| 435i 306hp | 306 → 365 bhp | +59 bhp |
| 435i PP 339hp | 339 → 365 bhp | +26 bhp |
Frequently asked questions
How much bhp does BMW 4 Series GC chip tuning add?
Average Stage 1 gain +22%; highest gain +66 bhp (420i 184hp). Choose your engine.
Will chip tuning damage the engine?
No. Values stay inside the safety margin the manufacturer leaves; engine, gearbox and turbo limits are not exceeded. Every file is verified with a road test and data logging. If the car needs maintenance first (worn injectors, blocked filter, weak clutch) we tell you before starting.
Will my fuel consumption go up?
With the same driving style it usually drops, because you hold the same speed at lower revs and less throttle. If you use the extra power, consumption naturally rises. It is down to your right foot.
How long does it take? Do I leave the car?
Most cars take 1–2 hours and you get the car back the same day; no need to leave it. Some models need the ECU removed, which takes longer — we tell you when booking.
Can I go back to stock later?
Yes. The original file is read and archived before any work. We restore the factory software free of charge whenever you ask.
⚠ Software work on emission systems is offered only for uses permitted by applicable law (motorsport, off-road use, export, fault diagnosis, etc.). Road use and inspection compliance of the vehicle remain the owner's responsibility.
For workshops
Prepare this file in your own workshop: ECU Prime
ECU Prime is chiptuning software that recognises the original ECU file you read with your tool and applies the operation you choose. The checksum is corrected in the same flow.