TurboSystems N57 Turbo Upgrade: Choose Stage 2, 3, or 4 - BMW X5 35D or 535D

  These turbos are configured for USA spec N57 vehicles with the correct VGT actuators.  Compatible with 2014-2018 X5 35D, and 2014-2017 535D.                                                  Stage 2 & 3 turbos make for great daily driver turbos with quick spool and great driveability.  Stage 4 will have more lag increase / tendency for surging, but will support higher power for drag racing applications where turbo lag is less of a concern.                                   For most customers, the Stage 2 or 3 is the best all around turbo.  Both pair nicely with the stock fuel system. The stage 2 is great up to around 400whp.  The stage 3 will get the most out of the stock fuel system at around 425whp.  With the addition of an upgraded M50D Cp4 fuel pump, the stage 3 supports around 475whp.  Our personal 2014 F15 35D runs high 11's in the 1/4 mile with this the stage 3 turbo and M50D pump (low 12's with stock fuel system).  This is with a 5000 lb SUV, the 535D sedan will be much quicker at the same power level.     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; Refurbished housings; Flow bench adjusted; Balanced on VSR; Power range: 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; Refurbished housings; Flow bench adjusted; Balanced on VSR; Power range: 475HP    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; Refurbished housings; Flow bench adjusted; Balanced on VSR; Please note that this Stage 4 turbocharger should be used only for racing applications. Upgraded intake system as well as performance downpipe and custom software is required in order to achieve the best results. Power range: 490+HP