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engine emits a different roar at higher RPM


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  • 2 weeks later...

Well, after a few days at the garage, it turns out it's the Y-shape rubber part that connects to the two turbos with a smaller tube-like structure sticking out, near the top of the "Y". I think this part leads to the turbines. The smaller tube is what's leaking. The part was replaced and car runs really well! The turbo's build up really fast. Cost me $100, with free labor, because I'm helping my mechanic friend on the Vapor Recovery System on the 997 4s. ha.

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