New K&N Intake buzzes when throttle is fully pressed down

[Gdudeac2511]

I just installed a K & N Typhoon Cold Air Intake into my 2011 2.5 Altima Coupe. Whenever I floor my car it makes a buzzing noise and I cannot figure out what it is. I have double checked to make sure all screws etc. is tight. Has anyone else had this issue or know how to fix it? Thanks in advance.

[spiderwebfx]

It's not just a intake noise now that you no longer have any intake mufflers or anything? (Presuming it had them originally of course)

[Gdudeac2511]

I have no other mods to my car so it shouldn't just be the intake noise. It starts at about 20mph and has an annoying buzz noise until I let off the throttle.

[spiderwebfx]

Is it more noticeable under WOT or just after 20mph?

[Gdudeac2511]

after 20...before 20 I just hear the intake which sounds good but then after 20 the buzz noise takes over.

[Gdudeac2511]

And I don't hear it at all if I am not on WOT

[spiderwebfx]

I am guessing it's due to the factory intake piping being removed and having the K&N setup installed. The factory one is all plastic with an intake box and resonators which all helps reduce intake noise. The new kit is a alloy tube and a pod-filter (I think?). The alloy tube will also generate more resonance than what the plastic noise is.

Look at this http://www.youtube.com/watch?v=9ocAlvufiR4

Is it similar to the noise when he blips it after the kit's installed?

[Gdudeac2511]

No, it makes that noise that sounds good! However the buzzing noise kicks in too...anyway. One more question, when I rev it it seems to stop at 1000 rpm for a couple seconds, than drop back down to normal. Do you know anything about that?

[spiderwebfx]

That is standard across most car's when they're cold I thought.
As for the buzzing, I'm not too sure.

[Ranga14]

Check to see if a bee got trapped inside the intake.

[xshinnyshinx]

My car was doing that too like right after I installed an intake. I checked it out on a day I wasn't busy and I think what I did was move the big filter thing away from the part closest to the car and tightened the bolts more. The intake shakes when I gun it and hits the wall, that's what was happening to me.

[Gdudeac2511]

Yeah, I think whats happening is it is hitting the heat shield when I get on the pedal, which in turn vibrates the heat shield which is connected to the bracket to my car.