For the racing enthusiast or those just looking for the best, this is the ultimate upgrade to fully maximize the power output of your EWG N55 engine. The compressor wheel inside the turbocharger is increased in size allowing ~30% greater flow thus enabling additional boost pressures at higher engine speeds while retaining efficiency. These are rebuilt factory turbos that are machined to Dinan specifications along with an upgraded thrust system to ensure reliable and prolonged life. In order to attain maximum advertised power gains these big turbos will need to be paired with DINANTRONICS Stage 4, as well as Dinan’s intercooler to fully regulate the boost increase and deliver a polished product although the exhaust and intake are also recommended.
Note: Installation times vary depending on application: F22 M235i RWD, F30 335i RWD, F32/F36 435i RWD - 5.0 hrs. F22 M235i xDrive, F30 335i xDrive, F32 435i xDrive - 9.9 hrs. F34 335i xDrive, F36 435i xDrive - 10.4 hrs
- Factory turbo that is machined to Dinan specifications with an upgraded thrust system.
- Larger billet compressor/impeller wheel that allows ~30% greater flow over stock which then enables additional boost to be realized while retaining efficiency.
- Turbo assembly is compatible with electric wastegate vehicles only. There is a separate kit (D310-0115) for cars equipped with a mechanical / pneumatic wastegate (applies only to the 335i).
- Peak power: 445 HP @ 6000 RPM and 455 ft-lbs @ 3000 RPM and a max gain of 128 HP @ 6000 RPM and 113 ft-lbs @ 6000 RPM when coupled with other Dinan Performance upgrades. (Data from F22 M235i.) 448 HP @ 6500 RPM and 417 ft-lbs @ 3000 RPM and a max gain of 152 HP @ 6500 RPM and 123 ft-lbs @ 6500 RPM when coupled with other Dinan Performance upgrades. (Data from F32 435i. Other variants may differ.)
- Dinan Installation instructions detail a procedure which is quicker than BMW's turbo replacement procedure saving the end-user money and time at the shop (Applicable to RWD vehicles only).
- Includes o-rings and gaskets needed for complete installation on a RWD vehicle only. If installing on an xDrive vehicle Dinan P/N D313-0117 is required for additional installation hardware.
- Factory matching new car warranty (4yr/50k) when run in Dinan specification.
- 50 State Emissions legal; CARB EO # D-176-49.
Installation Instructions: Dinan N55 Big Turbo Upgrade D310-0110 Instructions
- F22 M235i RWD, F30 335i RWD, F32/F36 435i RWD
- F22 M235i xDrive, F30 335i xDrive, F32 435i xDrive
- F34 335i xDrive, F36 435i xDrive