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Infiniti G37x Coupe

Yep! Measures the amount and temperature of the air going into the intake to help make sure the right amount of fuel is being injected

Good point with the snorkel! I've had to remind the dealership to not put the truck through their car wash - first time they did that, it popped the snorkel off one of the retaining clips >:[ I haven't had any issue with the MAS during the rain, but it is something I've thought about. More...

Took some exploring with my phone and an FFT app :p

Naa, I like that sound (that's the pedestrian alert sound) It is a high pitch electrical whine coming from behind the glove box. On the other side of the firewall in that location is about where the hybrid inverter is, so I'm fairly certain it's the inverter noise.

Maybe? I don't think I've heard it in other hybrids though. Just a minor annoyance

What tires did you end up going with, once the OEM set is no good for Michigan I am thinking about upgrading to the KO3. Not sure if I will go up to 35 or keep the 33. Perhaps I described it wrong. When the window is part way down and you close the door or on very bumpy roads you can see some...

Well, today is the 1 year mark for my Trailhunter. 16.5k miles, lifetime average MPG of 18.13, 4 oil changes, and no ragrets. Just going to give a few impressions on the good, not so good, mods I've done, and mods I plan on doing in the future. TL;DR: Great truck, I'm glad I waited, and I...

Ordered the step edition sliders with kickout (powder coated with bed liner step), they arrived, and due to holiday travel, business travel, and cold weather, they are finally installed after months of sitting in garage! They look and work and work great!

There are 2 sounds being discussed. One is the pedestrian sound which is a speaker, the other is an electronic whine (maybe coming from the inverter)

If you want, download an app like specdroid (or any FFT app), and you can easily 'see' the noise, even if you can't here it (note the location of the green crosshairs)

Ya. I have a recording of it on the first page, and a plot that shows the frequency (to compare to the pedestrian warning sounds). I've also been able to get the noise when the stopped with engine off by releasing a little pressure on the brake. It is as if the inverter is commanding torque...

I know it isn't "the sound hybrids make" because I recently drove a Camry hybrid for a few days and it didn't have this noise.

Full audio file uploaded in zip folder. For this clip, I put my phone on the hood of truck, got in (door close sound), put in gear (parking break noise), you can hear the pulsating whir that is the pedestrian noise as I idled around parking lot getting up to ~10mph, stopped and took phone off...

Sorry for the delay. I have uploaded a clip of the sound (in a zip folder because apparently you cannot upload audio files). The high pitch whistle is very faint and starts about 1.5s into the clip. If you do an FFT on the sound file (I used Audacity), you can see a spike at~4800Hz and a few...

Not sure that the pedestrian noise is the same noise Bcphoto3 is talking about. I have a Trailhunter (since early Oct) and will post some info if same noise @Bcphoto3 , does it sound like the noise is coming from the passenger side of the vehicle?