N55 F-Series EWG Build Breakdown

🚘 N55 F-Series EWG Build Breakdown

Stock WHP: 310

360 WHP (+50 WHP over stock)

• MHD Super License (Link to product)
• MHD Wireless Flash Adapter (Link to product)
• NGK 97506 spark plugs (Link to product)
• RK Tunes Front Mount Intake (Link to product)
• Upgraded Intercooler
• RK Tunes High Output Ignition Coil Packs (Link to product)
• RK Tunes Charge Pipe (Link to product)

400 WHP (+90 WHP over stock)

All above PLUS below:

• Hi-Flow Catted Downpipe

510 WHP (+200 WHP over stock)

All above PLUS below:

• E30 Fuel Blend
• MHD Flex-Fuel Kit (Link to product)
• Upgraded HPFP (TU/DS2.5)

600 WHP (+290 WHP over stock)

All above PLUS below:

• RK Tunes Dual Ball Bearing Turbo
• Port Injection with 750cc+ Injectors
• MOTIV Reflex (Link to product)
• RK Tunes Low-Pressure Fuel Pump

750 WHP (+440 WHP over stock)

All above PLUS below:

• Full-Frame Turbo (6266+)
• RK Tunes Crank Hub
• Stage 1 Transmission / Upgraded Clutch (manual)

850–900 WHP (+540–590 WHP over stock)

All above PLUS below:

• Full-Frame Turbo (6466)
• Charge Air Cooler / Upgraded Intake Manifold
• Stage 2 or Better Transmission

950–1100+ WHP (+640–790 WHP over stock)

All above PLUS below:

• Full-Frame Turbo (68–70mm+)
• Fully Built Engine
• Full Low-Pressure Fuel Pump System (2+)

Notes (N55):

• ✅ Spark plugs every 10k miles (NGK 97506)
• ✅ Ignition coils every 50K miles
• ✅ New factory direct injectors suggested every 70K miles
• ✅ Hi-Flow Catted Downpipes recommended
• ✅ Charge pipes get brittle and break randomly
• ✅ Manual cars require upgraded clutch as WHP increases
• ✅ Port Injection > DI-only for high WHP
• ✅ RK-Tunes parts recommended but not mandatory
• ✅ We NEVER tune with methanol injection
• ✅ See Direct Injection vs Direct Injection + Port Injection breakdown for all cars
• ✅ Spark Plug Gaps:
  - ≤550 WHP: .025
  - 551–700 WHP: .022
  - 701–850 WHP: .020
  - 851–1000 WHP: .018
  - 1000+ WHP: .016