I thought this too but if I put it in sport or sport plus it doesn’t make the sound nearly as loud or if at all. Which makes me think it doesn’t have anything to do with turbo fins. I still think it’s something with the wastegate but I’m not sure. I connected to the vacuum line that leads up the engine and not the actuator I don’t know if that would give me a bad reading?
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Originally Posted by doodlebro
Yeah, I'd check the turbo fins/bearing for any play. I installed my VRSF catless and I'm not experiencing the stuff you are. I also checked my wastegate nuts and they were still very tight, so I didn't mess with anything.
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