Integra Hybrid Boost Leak

Wow, those are some nasty symptoms! Sounds eerily familiar to what I experienced with my old 2018 BMW 3 series diesel. Had a similar symphony of noises and performance woes. For me, it turned out to be a defective turbo actuator. Did you check the boost pressure sensor readings? That might give you a clue if it's the actuator or something else in the turbo system. It's like trying to find a leaky faucet in a complex plumbing system – you gotta trace the pressure!

Thanks! Turbo actuator... interesting. Where exactly is the boost pressure sensor located on the Integra? And what kind of readings should I be seeing at idle vs. under load? I want to confirm my suspicion about the electrical bypass valve before throwing parts at it.

On my BMW, the boost pressure sensor was nestled right on the intake manifold, close to the turbo. As for the readings, ideally, you would want to compare actual vs. expected values, consult your Honda repair manual. That whistling and hissing, though, still points to a potential boost leak. Honestly, with those symptoms, I'd strongly advise taking it to a trusted workshop. They can perform a proper smoke test and pinpoint the exact source of the problem. It’s like trying to diagnose a heart murmur – sometimes you need a stethoscope and a skilled cardiologist!

You nailed it! Took it to my usual shop. Turns out the electrical bypass valve was defective, just as I suspected, causing a boost pressure actuator fault. New valve fitted, and she's running like a dream again. Total cost: 250€.