I recently purchased a Turbocharged 2015 Scion FR-S (Automatic).
It pulls smoothly when under full boost, but makes a fluttering noise (audible in the attached video).
What is causing this noise or what should I try to narrow down the source?
https://photos.app.goo.gl/3Nyjx5VS1s75xoeg9
Specs:
- Full MaPerformance turbo kit
- Delicious tuning flex fuel kit
- Borla catback exhaust
- Open dump wastegate
- 350 wheel horsepower
- 12 lbs of boost