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  • Dropping a turd
  • Gold Donating Members
  • Member For: 17y 6m 14d
  • Gender: Male
  • Location: Perth

Boost spike before wastegate was to be expected. Maybe port job is crap. Seen plenty of dodgy flappers sticking. 

 

Good tuners know all these things. 

  • Bronze Donating Members
  • Member For: 13y 9m 20d

Your doing well to see 21psi on a stock turbo. Sounds like the gate is stuck closed.

Remove your boost solenoid from the equation and see if it still does it. Aka plug hose from front housing straight into the wastegate actuator.

If so it's a port/actuator issue.

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