Tuning Boost

Tuning Boost (Subaru Specific)

• Basic Overview of the Factory Boost Control System (Target Boost, Max WGDC, Turbo Dynamics)
• Pros/Cons of Using Aftermarket Boost Control (MBC, EBC)
• Explain How Percieved Problem with Tune or Factory BCS May be a Mechanical Problem (Wastegate arm too loose, External WG needed)
• Ways to Make Factory Boost Control More Effective / Fix a Mechanical Problem
  • Boost Control on the TD04
    • Improving Response and Holding Boost Better (Wastegate Arm Adjustment - Did Wonders for me!)
  • Boost Control on Other Turbos
    • Drilling Restrictor Pill
    • Upgrading Solenoid to GM or Prodrive 3-Port

Tuning Boost in RomRaider

1. Log Boost
2. Reaching Target Boost?
   • No? Increase Max Wastegate Duty Cycle & Log Again (Over 90% not safe for prolonged periods)
     • If WGDC is above 90% & still not reaching target, May Need pill or prodrive/GM solenoid
   • Yes? Boost is Tuned, maybe focus on improving spoolup early on
     • High WGDC Early in RPM range to keep WG closed and improve spoolup
3. Tuning Turbo Dynamics?