GP Turbos and BMW diesels
BMW diesels had their own section in the GP Turbos shop from 2019. Between 2019 and 2023 the shop listed hybrid upgrades for the 2.0-litre M47 and for both the single-turbo and the twin-turbo versions of the 3.0-litre M57. Each was built on the type of turbo the car left the factory with, upgraded inside rather than swapped for a different unit.
What the upgrades involved
The BMW listings describe changes such as:
- an extended-tip billet compressor wheel, with the compressor cover re-profiled to suit it
- a turbine wheel trimmed and lightened
- a 360° thrust bearing in place of the original
- balancing of the rotating assembly to motorsport specification
On an otherwise standard engine a hybrid gains little. The extra airflow only becomes performance with supporting modifications and an engine calibration matched to the new turbo, so plan both before the turbo is built.
Rebuild or upgrade
Not every tired turbo needs a hybrid. A turbo rebuild replaces the worn parts and returns the turbo to its original specification. Either way, find out why the old one failed before anything goes back on the car: the turbo failure guide covers the usual causes.
BMW petrol engines
BMW's turbocharged petrol sixes did not appear in the old listings. The N54 uses two small turbos, while the N55 and the B58 each use a single twin-scroll turbo; the B58 also powers Toyota's GR Supra (see Toyota). If your car has one of these, send the details and GP Turbos will say what it can do.
The listings are shown here as history, not as a current price list, so ask what can be built for your engine today. GP Turbos is independent of BMW, and model names are used only to identify which cars a turbo fits.