BMW B57D30 upgrade turbocharger

Bolt-on upgrade turbocharger solution for BMW B57D30 engine power gain, designed to work with stock exhaust manifold and other engine units.
Four versions available from Stage 2 to Stage 5. Specifications and compatibility list written below.

Stage 2 (HTD2872):

• Upgraded bearing system;
• CNC machined compressor housing
• Special Compressor Housing without plastic silencer;
• CNC machined turbine housing;
• Custom variable geometry nozzle;
• reinforced bigger machined from the solid compressor wheel - 50/72mm;
• bigger turbine wheel - 51/49mm;
• Flow bench adjusted;
• Balanced on VSR;

Power range: 370-400HP

Stage 3 (HTD3073BB):

• dual ceramic ball bearing;
• CNC machined compressor housing;
• Special Compressor Housing without plastic silencer;
• CNC machined turbine housing;
• Custom variable geometry nozzle;
• reinforced bigger machined from the solid compressor wheel - 54/73mm;
• bigger turbine wheel - 58/54mm;
• Custom turbine housing;
• Flow bench adjusted;
• Balanced on VSR;

Power range: 420+HP

Stage 4 (HTD3279BB):

• Big dual ceramic ball bearing;
• Enlarged shaft and wheel diameter 6mm;
• CNC machined compressor housing;
• Special Compressor Housing without plastic silencer;
• CNC machined turbine housing;
• Custom variable geometry nozzle;
• reinforced bigger machined from the solid compressor wheel - 56/79mm;
•  High flow design turbine wheel - 58/56mm;
• Flow bench adjusted;
• Balanced on VSR;

Power range: 470+HP

Stage 5 (HTD3379BB):

• Big dual ceramic ball bearing;
• Enlarged shaft and wheel diameter 7mm;
• CNC machined compressor housing;
• Special Compressor Housing without plastic silencer;
• CNC machined turbine housing;
• NEW design custom variable geometry nozzle with 14 nozzle blades;
• reinforced bigger machined from the solid compressor wheel - 56/79mm;
•  High flow design turbine wheel - 62.8/56mm;
• Flow bench adjusted;
• Balanced on VSR;

Power range: 500+HP

Please note that with upgrade turbocharger installed you will need engine tuning. 

Stage 3-5 turbochargers should be used only for professional use. Upgraded intake system as well as performance downpipe and custom software is required in order to achieve the best results.

Compatibility list