OVERVIEW

The Pure Stage 2 is Pure Turbos’ OEM-based turbo upgrade for the N55. Pure rebuilds your factory turbocharger with an upgraded billet compressor wheel, a high-flow turbine wheel and an upgraded CHRA, while keeping the OEM housing for a factory-like installation. Pure Turbos rates it as 550+ whp capable, with results depending on fuel and supporting modifications.

This is a core-exchange upgrade: send your turbo to Pure first, or pay a refundable core deposit ($300 for pneumatic-wastegate / PWG turbos, $500 for electronic-wastegate / EWG turbos) and return your core after your upgraded turbo arrives.

SPECS

550+ whp capable (results vary by fuel and supporting modifications)
Upgraded billet compressor wheel
High-flow turbine wheel
Upgraded heavy-duty CHRA (center housing rotating assembly)
VSR high-speed balanced
Retains OEM housing
Optional Pure Hi-Flow silicone inlet kit: E-Series (135i / 335i / 335is) +$275, or F-Series (M235i / 335i / 435i / M2) +$295
Optional Go Fast Bits DV+ diverter valve (+$135; standard or M2 version) or Turbosmart VR9 / VR11 (M2) blow-off valve (+$275)

PARTS INCLUDED

Your N55 turbocharger upgraded to Pure Stage 2, as supplied by Pure Turbos
Pure silicone inlet kit (inlet pipe, CNC billet adapter, billet mounting bracket and two clamps), when selected
Go Fast Bits DV+ or Turbosmart VR9 / VR11 valve, when selected

TECH RESOURCES

Additional Parts Required

Custom ECU tune: required by Pure Turbos for engine safety and to reach the rated power. Tuning platforms we sell: MHD Super License – N55 (E-Series), MHD Super License – N55 (F-Series), Bootmod3 N55 F-Series Tune, or the Burger Motorsports JB4 (N55 E-Chassis / N55 F-Chassis).
A core that matches your turbo: either send your original turbocharger in first, or pay the refundable core deposit (PWG $300 / EWG $500). The core must be the same wastegate type you order. Include the Pure Turbos core return sheet with your core.
Turbo inlet: an upgraded inlet is strongly recommended. Pure’s E-Series and F-Series silicone inlet kits are options on this listing.
Turbo gaskets, O-rings, and oil and coolant line seals: single-use items that should be replaced during installation. They are not supplied with the turbocharger.
Supporting fuel system: needed at higher power levels. Confirm your fueling before ordering; we can advise.

Installation

Pure Turbos installation, pre-lube and break-in procedure (manufacturer FAQ): pureturbos.com/faq. Pre-lube the turbocharger through the oil inlet, idle 5–10 minutes without revving, then drive on low boost / light throttle until the car is properly tuned.
Pure Turbos does not publish model-specific installation instructions or videos for this upgrade. Installation follows the factory turbocharger replacement procedure for the chassis; professional installation is recommended.
Pure Turbos core return sheet (PDF): pure-turbos-core-return-sheet.pdf. Print it, fill it in and include it with your core shipment.
Before sending your core to Pure, remove all accessories and hardware from it (oil lines, coolant lines, actuators, inlets and similar). Pure discards anything that is not part of the core unit.

Notes

Send-in option: lead time starts once Pure receives your turbo.
Core deposit option: the deposit is refunded once your factory turbo is returned to Pure within 60 days of receiving your upgrade.
Choose the inlet kit and DV/BOV option that matches your chassis: the E-Series inlet fits the 135i / 335i / 335is, the F-Series inlet fits the M235i / 335i / 435i / M2, and the M2-only valve versions are for the F87 M2.
Pure Turbos includes a limited 1-year / unlimited-mile warranty.
Legal notice: these parts are for off-road use only and are legal solely for competition racing vehicles as defined under California law. They are not legal for use on public roads.
Price is for the turbocharger only; labor is not included.

VEHICLE APPLICATIONS

Make	Model	Chassis	Engine	Years
BMW	135i	E82 / E88	N55 3.0L Turbo I6	2011–2013
BMW	135is	E82 / E88	N55 3.0L Turbo I6	2013
BMW	335i	E90 / E92 / E93	N55 3.0L Turbo I6	2011–2013
BMW	335i	F30	N55 3.0L Turbo I6	2012–2015
BMW	335i xDrive	E90 / E92 / F30	N55 3.0L Turbo I6	2011–2015
BMW	335i GT xDrive	F34	N55 3.0L Turbo I6	2014–2015
BMW	435i	F32 / F33 / F36	N55 3.0L Turbo I6	2014–2016
BMW	435i xDrive	F32 / F33 / F36	N55 3.0L Turbo I6	2014–2016
BMW	535i	F10	N55 3.0L Turbo I6	2011–2016
BMW	535i GT	F07	N55 3.0L Turbo I6	2011–2016
BMW	640i	F12 / F13	N55 3.0L Turbo I6	2012–2018
BMW	640i Gran Coupe	F06	N55 3.0L Turbo I6	2013–2018
BMW	740i	F01	N55 3.0L Turbo I6	2013–2015
BMW	740Li	F02	N55 3.0L Turbo I6	2013–2015
BMW	M235i	F22 / F23	N55 3.0L Turbo I6	2014–2016
BMW	M2	F87	N55 3.0L Turbo I6	2016–2018
BMW	X1 xDrive35i	E84	N55 3.0L Turbo I6	2013–2015
BMW	X3 xDrive35i	F25	N55 3.0L Turbo I6	2011–2017
BMW	X4 xDrive35i	F26	N55 3.0L Turbo I6	2015–2017
BMW	X4 M40i	F26	N55 3.0L Turbo I6	2016–2017
BMW	X5 xDrive35i	E70 / F15	N55 3.0L Turbo I6	2011–2018
BMW	X6 xDrive35i	F16	N55 3.0L Turbo I6	2015–2018