6.0 Cold Air Is Way Too Loud At 75, How do you shut it up!

[Searay45db]

Ok, I have visited this once before, but since then I have become more educated. As most of of you know, K&N owns AEM and Air Raid. The 6.0 is a really loud engine, which is why there is so many baffles and resonators on the stock. I removed the AEM because it was really super loud because of the metal pipe. Now on the k&N with the plastic pipe, little better. I am also chipped, so I am sucking a lot of air. Air Radid or maybe Spectre, who every K&N owns makes a set-up where you keep the factory box, but then have a a free cold air intake pipe that helps with the noise a lot. Talking to a company that sells noise insulation for the engine room, they recommended putting in a new noise insulation blanket under the hood, it's pretty thick. I also have a Magna Flo coming out the back which is letting more air in.

Anyone have any luck or y'all enjoy massive intake noise at 75?

 

[Mechanic421]

I have same truck 05 denali xl. With Gibson 3 inch exhaust airaid jr( stock box but popped out plastic piece of box. At 75 can just hear exhaust. And the gibson system is not very loud.

 

[Searay45db]

I have same truck 05 denali xl. With Gibson 3 inch exhaust airaid jr( stock box but popped out plastic piece of box. At 75 can just hear exhaust. And the gibson system is not very loud.

I heard the Air raid jr. was an option. Wonder how much HP i lose...

 

[Mechanic421]

They us same air box on the duramax i doubt you will loss any power just pop out the big piece of plastic from fender side of box.

 

[Wagnasty]

I heard the Air raid jr. was an option. Wonder how much HP i lose...

Not enough to be noticed

 

[#1taho]

What kind of noise are you hearing. I can't compair Apple to apples cause I don't have a k&n or air raid, but I do have the cheep cold air kit and magnaflow exhaust. I don't hear anything. I drive it fairly hard and 80 mph plus and still don't hear anything. Step on it hard and hear very little sucking noise for a second.

 

[Sasquatch]

I don`t have a 6.0 but i have a spectre cai with an aem filter, Catback and a BB tune and just like #1taho i only hear any noise when hitting the gas hard off the line or free revving the engine for a second and unless you`re trying to hear it you almost never notice it.

 

[iamdub]

Sounds like your engine is under more load than it should be at 75MPH. Also, being "chipped" has nothing to do with how much air the engine sucks in. Unless by "chipped" you mean cammed or ported or something along those lines. You don't/can't "chip" pretty much anything newer than OBD2 as they are simply reprogrammed or "tuned" instead of having a PROM chip replaced.

How is your intake set up? Is it basically a tube coming off of the TB routed towards where the stock filter box used to be with a conical filter on the end? Or does it go into a fully-enclosed filter box (not a "heat shield")?

 

[Searay45db]

Interesting comments. K&N Cold Air, Conical goes into a K%N black plastic pipe. Straight to the TB. When I am driving 75, I have my foot on the gas, and its loud. If I go to 80, it quiets down. Talking with K&N and others, the 6.0 is a loud engine, which is why when you take the factory pipe off, there is a lot of resonators and baffle's to quiet it. I am hearing both a lot of air coming in and you are hearing noise coming form the engine. I have the same set-up on my 5.3, no big deal, but AEM and K%N have both said there is a huge difference with the 6.0.

I average around 16.5 MPG at 75. If I slow down, it goes way up. Again, there is a huge difference with the 6.0 and the 5.3.

Chris, are you 6.0 or 5.3? AT 80, I am not that bad.

I did look at the Volant Cold Air Intake. It's pretty cool. They make snorkels' and stuff. There cold air intake is a closed system, and they run a tube to pick up the air lower in the vehicle to get a higher temp, then goes into a closed box, station tube to the TB.

As far as ending load goes, I have a computer on it, not doing anything unusual.

 

[#1taho]

I am a 6.0 now. Tunned