I am wondering does all the cl make that humming sound from the engine. YOu could just hear it from down the street when I am coming home. Just curious because my friends acura 1999 cl also makes the humming sound as well. thanks

 

explain more about this humming sound.....

 

Do you have an intake on it? If so, that's the vacuum of the engine making resonance though the aluminum piping combined with the cone air filter sucking in air. I had the same humming going on with the Weapon-R intake I installed... and then took off.

I ended up making a (gasp!) short ram using the Weapon-R foam cone air fliter (only quality part from the intake kit) and a 3" U-bend rubber tube and kept the stock flex plastic piping with air breather tube assembly. It feels way more responsive than the stock air box w/K&N and doesn't hum nearly as loud as with the aluminum piping. Just hear a sucking wispy kind of noise now from the air filter sucking in air.

 

I was gonna say the same thing... That shit happend to me and it took me about a week to figure it out.

Good luck.

 

mine humms... and loud! especially in garage and stuff

but it sounds nice and deep, i love it

 

everything is factory just change the air filter recently, I guess I just have to listen to other cl's to see if their car hums also like mine's do. It is like a low humming sound. Wish I could load it the your guys to hear it. The car drive fine. Just the sound is annoying as a muthafck.