I'v had it installed for about a month now but just noticed this weird sound. You can hear it clearly around 15 seconds. Once I put some pressure on V+ the sound goes away. I just checked the torque on the bolts and they are all good and no leaks from the plenum. Is this normal for this upper plenum?

https://www.youtube.com/watch?v=qwm3...ature=youtu.be

 

It leaks. It's plastic, low quality, like most things kinetix...

 

Well, I hope its not a leak . It only stops(almost) when I press the center. Wondering if maybe its the support that is doing it?

 

Naw buddy you're good. I think it's the sound vibration bouncing off the middle because it is made of plastic it will flex. Mine does the same thing and I've shaved that center post out. If you had a leak with this plenum, you would definitely hear the vaccum sound.

 

Good to hear , thank you. I swear I didn't hear it before even though I spent 5 mins checking for leaks after I installed it .

 

You definitely will hear the engine internals more through the V+.

 

I used silicon instead of the cork gasket to seal mine.

 

Don't worry, I have this plenum for over 50k miles with this sound. I actually like it that way

 

Thanks everyone, appreciate the feedback.

 

Does this intake manifold make power gains over the stock upper intake manifold?