Pure Turbos Stage 2+ Upgrade Turbos – BMW M2 / M3 / M4 (S55)

OVERVIEW

Pure Turbos’ industry-leading S55 Pure Stage 2+ pushes the F-Series M platform well past what the Stage 2 turbos deliver — Pure records almost a 130whp gain over their own Stage 2 units. The turbos are built on the OEM housings and retain a factory fit.

Each unit gets a Pure Turbos billet compressor wheel, a larger and stronger turbine wheel and an upgraded bearing housing, and is VSR high-speed balanced. Hi-flow machined inlets are supplied for the front and rear turbos, along with a hi-flow silicone inlet for the front. Pure engineered and proved the Stage 2+ to support 900whp+, with their own recorded results including 877whp, 852whp on a European M3, 837whp, 827whp / 791 lb-ft on E85, 767whp and 625whp on 94 pump gas.

SPECS

• Pure Turbos custom billet compressor wheel
• Larger, stronger high-flow turbine wheel
• Upgraded bearing housing
• VSR high-speed balanced
• OEM housings retained
• Hi-flow machined inlets, front and rear
• Hi-flow silicone inlet, front only
• Pure Turbos rating: engineered and proven to support 900whp+
• Pure Turbos records almost a 130whp gain over their Pure Stage 2 turbos
• Pure Turbos dyno results: 877whp; 852whp (EU M3); 837whp; 827whp / 791 lb-ft on E85; 767whp; 625whp on 94 pump gas
• Build-to-order: allow approximately 3–4 weeks, and 4–8 weeks during peak season
• Core required — ship your factory turbocharger(s) to Pure Turbos, or pay a refundable core deposit and return the cores afterwards
• Core return window: full core-deposit refund when the cores are returned within 60 days of receiving the upgrade; returns after 60 days are subject to deductions, and physically damaged cores may be reduced in value or denied
• Warranty: Pure Turbos one-year, unlimited-mileage limited warranty

PARTS INCLUDED

• A pair of Pure Stage 2+ upgrade turbochargers built on your OEM S55 housings
• Hi-flow machined inlets (front and rear)
• Hi-flow silicone inlet (front)
• Complete kit as supplied by Pure Turbos; see the installation instructions for the full bill of materials.

TECH RESOURCES

Additional Parts Required

• A custom ECU tune is mandatory. Pure Turbos states: “DO NOT WIDE OPEN THROTTLE WITHOUT A PROPER TUNE.” Tune options we stock: MHD Super License for F-Series S55, bootmod3 S55 tune, JB4 Tuner for S55
• New gaskets and O-rings. Pure Turbos: “Always, use new gaskets and O-rings (where applicable).” These are not supplied with the turbocharger.
• Core turbocharger(s) — either ship your factory units to Pure Turbos for the build, or select the refundable core-deposit option and return your cores afterwards. Remove all lines, fittings, actuators and accessories before shipping cores.
• Fueling headroom for the higher power targets: an E85 blend and an upgraded high-pressure fuel pump such as the Dorch S55 Lift Kit HPFP Upgrade. Pure’s own results at this power level were made on E85 and race fuel.

Installation

• Pure Turbos installation, pre-lube and break-in procedure (manufacturer FAQ): pureturbos.com/faq — pre-lube the turbocharger through the oil inlet, spin the compressor wheel to coat the bearings, idle 5–10 minutes without revving, then drive on low boost/light throttle until the car is properly tuned
• Pure Turbos core return sheet (PDF): pure-turbos-core-return-sheet.pdf — print it, fill it in and include it with your core shipment
• Professional installation is strongly recommended; turbocharger removal and refitting requires the correct torque specs, clean oil and coolant feed lines and a full oil service.

Notes

• **Price as listed is for parts only. Labor is not included**
• THESE PARTS ARE LEGAL FOR USE ONLY IN COMPETITION RACING VEHICLES AS DEFINED UNDER CALIFORNIA LAW, AND ARE NOT LEGAL FOR USE IN ANY OTHER MOTOR VEHICLE.
• Pure Turbos does not publish an official part number for this upgrade and no SKU is recorded against this listing, so no PART NUMBER section is shown. Confirm the exact configuration with Speed Logic when ordering.
• Pure Turbos’ dyno figures were recorded on cars with extensive supporting modifications, including built engines, E85 and race fuel. Results vary with supporting mods and fuel.

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