BMW 4 Series ECU Remapping & Engine Tuning
We have remap figures for 17 BMW 4 Series engines. Petrol engines gain +16% to +45% power and diesels +17% to +29%. The largest bhp increase is on the 4 Series M4: 425 to 515 bhp (+90 bhp, +21%). Book your 4 Series in at our Burnley workshop on 01282 779 000, or find a local dealer.
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View FAQs| BMW 4 Series F32/F33/F36 | Original BHP | Remapped BHP | Original Torque (Nm) | Remapped Torque (Nm) |
|---|---|---|---|---|
| 418D 2.0 141 BHP 2014-2015 | 141 | 181 (+28%) | 320 | 405 (+26%) |
| 418D 2.0 148 BHP 2015 - Present | 148 | 188 (+27%) | 320 | 405 (+26%) |
| 418D 2.0 134 BHP 2014-2015 | 134 | 174 (+29%) | 320 | 405 (+26%) |
| 420D 2.0 161 BHP 2013-2015 | 161 | 203 (+26%) | 380 | 455 (+19%) |
| 420D 2.0 181 BHP 2013-2015 | 181 | 232 (+28%) | 380 | 448 (+17%) |
| 420D 2.0 188 BHP 2013-2015 | 188 | 239 (+27%) | 400 | 468 (+17%) |
| 420i 2.0 181 BHP 2014 - Present | 181 | 264 (+45%) | 290 | 386 (+33%) |
| 425D 2.0 215 BHP 2014-2016 | 215 | 263 (+22%) | 450 | 520 (+15%) |
| 425D 2.0 225 BHP 2016 - Present | 225 | 265 (+17%) | 450 | 500 (+11%) |
| 428i 2.0 242 BHP 2013-2016 | 242 | 292 (+20%) | 350 | 434 (+24%) |
| 430D 3.0 254 BHP 2014 - Present | 254 | 298 (+17%) | 560 | 645 (+15%) |
| 430i 2.0 248 BHP 2016 - Present | 248 | 298 (+20%) | 350 | 450 (+28%) |
| 435D 309 BHP 2014 - Present | 309 | 374 (+21%) | 630 | 755 (+19%) |
| 435i 302HP 3.0 BHP 2013-2016 | 302 | 352 (+16%) | 400 | 528 (+32%) |
| 440i 3.0 322 BHP 2015 - Present | 322 | 380 (+18%) | 450 | 520 (+15%) |
| M4 425 BHP 2016 - Present | 425 | 515 (+21%) | 550 | 660 (+20%) |
| M4 444 BHP 2016 - Present | 444 | 525 (+18%) | 607 | 706 (+16%) |
Frequently asked questions
How much power does a remap add to a BMW 4 Series?
Petrol engines gain +16% to +45% power and diesels +17% to +29%. The full figures for each engine are in the table above.
How much extra torque does a remap give a BMW 4 Series?
Torque gains range from +11% to +33%, an extra 50 to 128 Nm depending on the engine.
Which 4 Series engine gains the most from a remap?
The 4 Series M4 gains the most: 425 to 515 bhp (+90 bhp, +21%). Torque rises from 550 to 660 Nm (+20%).
Where can I get my 4 Series remapped?
Book it in at our workshop in Burnley, Lancashire, on 01282 779 000, or find a local remap dealer in our dealer directory.
How we develop your remap
Our remaps are developed in-house at our facility in Lancashire, and cars are developed on our Dynojet 424xLC² dyno. Read more about dyno tuning at BHP UK.
Related:Petrol ECU tuning · Diesel ECU tuning · All BMW remaps · BMW 2 Series · BMW 3 Series · BMW 5 Series · BMW 6 Series
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