BMW 4 Series 420i 184hp Remap

Name: BMW 4 Series 420i 184hp ECU Remap
Brand: BMW

Expected gains of +66 BHP and +170 Nm torque

Data under review — The figures shown for this engine variant are currently being verified. They may be updated as we refine our data.

BHP+66 hp (36%)

Standard

184 hp

Tuned

250 hp

Torque+170 Nm (63%)

Standard

270 Nm

Tuned

440 Nm

Suitability

Good (6.5/10)

Gains Profile

Torque-focused

Headroom

High

BMW 4 Series 420i 184hp ECU Remapping

Considering an ECU remap for your BMW 4 Series 420i 184hp? A Stage 1 remap can take this F32/33 - May/2016 - 2019 petrol engine from 184 BHP to 250 BHP and from 270 Nm to 440 Nm of torque (naturally aspirated). This engine scores 6.5/10 for remap suitability. Get a free personalised quote from a trusted remap professional and find out exactly what your BMW 4 Series can achieve.

How this engine compares

3rdof 52 BMW 4 Series engines by power gain
90%of the 9,842 engines we hold gain data for see a smaller power increase
94%of engines with torque data see a smaller torque increase

Comparisons are calculated from our own recorded Stage 1 figures.

Assessment

The BMW 4 serie 420i 184hp is a 2.0L naturally aspirated petrol engine producing 184 BHP and 270 Nm from the factory. With a typical Stage 1 remap, output increases to approximately 250 BHP and 440 Nm — a gain of around 66 BHP (36%) and 170 Nm (63%).

This engine has moderate remap suitability, with gains weighted towards torque — you will notice the difference most strongly in mid-range pulling power and in-gear acceleration. The tuning headroom is classified as high, based on the percentage gain available from the factory output.

From a technical perspective, the transmission is many variants use zf 8-speed automatic (where fitted); manuals also exist..

Considerations: Naturally aspirated engine: gains are usually limited; results vary widely.. Unusually high gain for NA engine: treat as an estimate and verify against the exact engine variant.. High tuned torque: check transmission torque capacity and service history.. Large torque increase: drivetrain condition (clutch/gearbox) becomes more important at this level.

All figures shown are typical estimates based on aggregated Stage 1 data for this engine variant. Actual results depend on vehicle condition, mileage, and the chosen tuning method. We recommend discussing your specific vehicle with a qualified remap professional.

Considerations

!Naturally aspirated engine: gains are usually limited; results vary widely.

!Unusually high gain for NA engine: treat as an estimate and verify against the exact engine variant.

!High tuned torque: check transmission torque capacity and service history.

!Large torque increase: drivetrain condition (clutch/gearbox) becomes more important at this level.

Other 4 Series F32/33 - May/2016 - 2019 Engines

Engine	BHP	Gain	Torque	Gain	Score
418d 150hp	150 → 190	+40	320 → 400	+80	Excellent (8/10)
420d 163hp	163 → 220	+57	380 → 440	+60	Good (7.5/10)
420d 184hp	184 → 220	+36	380 → 440	+60	Good (7/10)
420d 190hp	190 → 220	+30	400 → 440	+40	Good (6.5/10)
425d 224hp	224 → 270	+46	450 → 500	+50	Good (7/10)
430i 252hp	252 → 287	+35	350 → 450	+100	Moderate (5.5/10)
430d 258hp	258 → 310	+52	560 → 650	+90	Good (7/10)
435d 313hp	313 → 360	+47	630 → 700	+70	Good (6.5/10)
440i 326hp	326 → 400	+74	450 → 585	+135	Moderate (5.5/10)

Technical Specifications

Fuel Type: Petrol
Aspiration: Naturally Aspirated
Displacement: 2L
Capacity: 1998 CC
Type: Car
Engine Family: BMW 2.0L NA Petrol

ECU & Transmission

Likely ECU Low confidence: Bosch MEVD/MG1 family (varies)
Gearbox Medium confidence: Many variants use ZF 8-speed automatic (where fitted); manuals also exist.

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Confirm Your Vehicle

MakeBMW

Model4 Series

GenerationF32/33 - May/2016 - 2019

Engine420i 184hp

All figures shown are typical estimates based on aggregated Stage 1 data for this engine variant. Actual results depend on vehicle condition, mileage, and the chosen tuning method.

We recommend discussing your specific vehicle with a qualified remap professional before proceeding.