BMW's turbo diesels are some of the most rewarding cars to tune — strong, torquey and very responsive to a good map. Here are the ones we tune most, and what they typically gain on a Stage 1 custom dyno map.
| Model | Stage 1 | Gain |
|---|---|---|
| BMW 320d | 190 → 230 bhp | +40 bhp |
| BMW 330d | 255 → 330 bhp | +75 bhp |
| BMW 335d | 313 → 390 bhp | +77 bhp |
| BMW 520d | 190 → 230 bhp | +40 bhp |
| BMW 530d | 265 → 330 bhp | +65 bhp |
| BMW X5 40d | 313 → 390 bhp | +77 bhp |
Turbo diesels have torque in reserve that a factory map keeps conservative for economy and worldwide conditions. A custom tune releases it safely — which is why diesels see such big, usable torque gains.
The N57 straight-six (330d, 335d, 530d, X5 40d) is our specialism — we've worked on it for over 14 years. It takes a Stage 1 map beautifully and, paired with xHP gearbox tuning, is transformed.
Not sure what your BMW will make? Check your car's gains or get a free quote.
Ready When You Are
Specialist BMW & VAG tuning, dyno-proven in Warrington. Tell us your car and we’ll send your gains and pricing.
Get My Free Quote