I'll give some input.

For my old R18, I had the first gen AEM CAI that I was able to get replaced for the newer version (big issue back then). During the waiting process, I ran only the airbox, no resonator. It sounded slightly louder, but zero vibration or funny noises. When I reinstalled the new AEM CAI, my car would vibrate like no other when idling. It was terrible.

Now, for my 06 SI, I have a Fujita SRI. It is beautiful. It does not idle violently. I think I may understand what you mean by 'vibrating' past 3000 RPMs. For me, it is more of a raspy kind of sound. You can really feel the intake working as you accelerate on it hard, and it's kinda neat. Otherwise, there are no funny vibrations.

Perhaps you have some bolts loose? Maybe you can try to zip-tie some parts down to ensure that there is no movement. I did that for my old CAI and it kind of helped.

Good luck!

 

I'll give some input.

For me, it is more of a raspy kind of sound. You can really feel the intake working as you accelerate on it hard, and it's kinda neat.

Good luck!

YES! that's it. The "RASPY kind of sound!" That's kinda it plus a "vibrating sensation" hahaa

Ok, I'm guessing this is....... NORMAL..........

 

yes, i have an AEM SRI and when i floor it below 3k it gives me a "vibrating sensation"

 

When I first got mine, I noticed a vibration around 3000 rpm, when I rev the engine in neutral.

I believe it's just the car's body being at the same natural frequency as the "usually unnoticeable" vibration from the engine, causing resonance.

Removing the resonator shouldn't cause the entire car to vibrate.

However, if the vibration keep getting worse as your rpm increases.. then it might be another story.

 

Removing the resonator shouldn't cause the entire car to vibrate.

The vibration feels like it's coming from the engine bay. So I'm THINKING it's the intake sucking air in really hard when I gas it hard.

 

When I installed the SRI, i left the resonator in. Was too lazy to take it out. The filter sits at the end of the engine bay right, so the tube thats remaining helps to channel air back there... kinda. I guess. hahaha

 

Though, I would imagine that I wouldn't hear it with the stock airbox. Imagine if you had an SRI then... hehehe bigger smiles. I can't really say that my car is 'vibrating' but you do hear that sound and when you vtec it's all over

 

haha maybe your intake is acting like a loud speaker or subwoofer.. shaking everything attached to the car. lol

 

Sooo, does it conclude that the vibrating noise IS coming from the intake sucking in lots of air?!?

 

could be something loose rattling around...maybe the tube from the airbox is vibrating against the frame since the resonator isn't there to hold it down