CTS Turbo F-series BMW N55 EWG BOSS Turbo Upgrade kit

We are proud to announce the release of our premium ball-bearing turbo kit with stainless steel exhaust housing for the F3x BMW platforms equipped with N55 EWG engine We utilized transient flow analysis backed by flow bench testing to optimize turbine housing for a GTX3582R while maintaining stock fitment, stock location, and using the stock waste gate (this is not a stock turbo with a bigger compressor wheel). This allows to run any stock fitment exhaust downpipe, intake and charge pipe. You can simply transfer your factory wastegate, your high performance downpipe, intake and charge pipe during the install. Product Details:

• Complete brand new turbocharger; no need for core to be sent it or purchased
• GTX3582R-style Gen2 ceramic ball-bearing CHRA (dual ball-bearing)
• Billet 10-blade compressor wheel
• Proprietary stainless steel turbine housing, flow matched to the turbocharger
• VSR Balanced to exceed OE tolerances
• Oil and water fittings included
• Compatible with factory installation hardware (not included)
• Compatible with factory wastegate actuator (not included, use your original wastegate actuator. Actuator must be calibrated during installation. 90% WDC max)

Application guide (fitment for EWG electronic wastegate only):

• F30 BMW 335i & 335xi (production date after 07/2013)
• F32/F33/F36 BMW 435i & 435xi 2013+

  **BIG TURBO SOFTWARE TUNING IS REQUIRED VIA ECUTEK PLATFORM, FUELING UPGRADES ARE RECOMMENDED. PROFESSIONAL INSTALLATION AND TUNING ARE REQUIRED. WASTEGATE MUST BE CALIBRATED WITH ISTA+ BEFORE TUNING. FAILING TO DO THIS WILL CAUSE PROBLEMS WITH TUNING. THIS TURBOCHARGER IS DESIGNED TO MOVE A LOT OF AIR AT FAIRLY LOW BOOST. MAX BOOST LEVEL IS 20PSI. Dyno results below are from our friend and master tuner Jimmy, at TunedByJimmyB (IG: @tunedbyjimmyb) Car:

• 2015 BMW 435i GC, Auto trans

Mods:

• CTS Turbo N55 EWG BOSS turbo kit
• CTS N55 intake
• High-flow cat downpipe+FBO parts
• High pressure fuel pump: Dorch Engineering Stage 2
• Low pressure fuel pump: Single Walbro 274
• Bosch EU5 S63 fuel injectors
• TunedbyJimmyB custom DME+tranmission tuning, using EcuTek RaceRom
• TunedbyJimmyB Flex Fuel Kit w/ Radium Engineering 6micron Fuel Filter
• TunedbyJimmyB BPV delete plate - STRONGLY RECOMMENDED
• 491 whp and 484 ft/lb at 17psi on pump gas
• 580 whp and 546 ft/lb at 20psi on flex fuel (55% ethanol content)
• Boost being brought in slowly, full boost by 5300rpm (to help prevent bending rods)

https://www.instagram.com/reel/CjvOjV9PnRk/?utm_source=ig_web_copy_link&igsh=MzRlODBiNWFlZA==

This part also goes by the following cross reference.

Cross Reference Part Number:

Fits These Vehicles 8 applications

435i

Make	Model	Engine	Years
BMW	435i		2013–2016
BMW	435i (F32)		2013–2016

335i

Make	Model	Engine	Years
BMW	335i		2013–2015
BMW	335i (F30)		2013–2015

435i xDrive

Make	Model	Engine	Years
BMW	435i xDrive		2013–2016
BMW	435i xDrive (F32)		2013–2016

335i xDrive

Make	Model	Engine	Years
BMW	335i xDrive		2013–2015
BMW	335i xDrive (F30)		2013–2015

Fitment data last updated: 2026-08-15

✓ Fits 8 vehicle applications Check vehicle fitment before ordering View fitment