air intake noise

[ericnj75]

the other day i replaced my stock intake with a new one . took it on a test drive sounds and feels great the only problem is when i punch it and let off the gas fast it makes a noise like a boat horn and its loud what could this be.

 

[pronstar]

Air intakes increase noise.

Most of the resrtiction in factory intakes is due to sound-related measures.

 

[4x4Dude]

Umm, i don't know about you Pronstar but if my intake was making a boat horn noise, there would def be something wrong. I have had intake on every car i've ever owned, and they have never made a noise like that.

They might make a noise when you shut off the engine, and give your engine a better sound while accelerating, but a boat horn...never. Check all of the fittings and make sure nothing came loose and you aren't leaking air from anywhere.

Also, what is the brand for the intake?

 

[AvroAero]

Whats the intake and whats the engine?

 

[ericnj75]

99 4.6 i bought it off of ebay .

 

[AvroAero]

Well I have a 99 4.6 with a K&N intake and I don't get any kind of noise when I let off the gas, except the one from my wallet hehe.

Was it a cheapy one? If not it depends on how loud it is to worry about it.

 

[ELVATO]

Boat horn? Like a fog horn? I'm pretty sure that's not normal.

The only sound I sometimes get from my AFE intake is a slight and subtle whistling sound.

Was it one of those cheap ebay intakes? Also, are you sure it's from your intake?

 

[4x4Dude]

You might want to throw down the money and get a name brand intake for your truck. I know that ebay sells a lot of cheap ass intake knock off's and they are horrible. Basically a metal tube with a cone filter.

I take it your intake didnt have a brand? and what was the price? if it was less than 50 bucks you might want ot put your stock one back on and order a new intake.

 

[pronstar]

My K&N way back in the day had a resonation at one specific RPM that was annoying...that's what I was referring to. It sounded like a honking noise.

I can't recall the exact RPM, but I could feel it resonate, and grabbing it with my hand would cause it to stop...but I could feel the increased vibration at this specific rpm....it was just above idle.