[psyco66]

Today I pulled the air box in the center of the engine off of the truck. The box that has 6.6 on it. When I removed the air box I put a plug in the hole. The plug is two peaces of metal with a peace of rubber inbetween it and a bolt with a wing nut on it. The hole is two inches wide. I put the plug in and I tightened the wing nut. For added security I put a 5/16 lock not onto of the wing nut so it will not back off. I then reinstalled the air box cover thing. The turbo whistle is way louder when I let of the fuel pedal. Hope this helps you guys that want a louder whistle. If anyone needs pics let me know I can get some. It is realy easy. Went to the hadware store and bought the plug for 3.60 and it took all of about 5 mins put put in. If you go to the hardware store look in the plumbing section for the plug like I described.

 

[BigRedChevy]

Does it look like this?

 

[psyco66]

Yes it does. I forgot to take a pic with the airbox back on the truck.

Once the airbox thing is back on the truck you can not ever tell you put the plug in there.

I would put a lock nut on to keep the wing nut from backing off

 

[duramaxin14]

It also does help a little with quicker spooling. If u wanna here what it sound like review this vidoe at the end of the pull
YouTube - Kurt's Duramax
And this
YouTube - 2wd again

Hahaha and you would no these would be my 2 suckest pulls that u can acutally here it

 

[Diggin' Doug's Duramax]

What size plug is that ? Any other benefits with this?

 

[BigRedChevy]

It is a 2" Test plug

 

[psyco66]

Yes it is a 2 inch plug. I noticed it does spool a little quicker and the turbo sound way sicker when you let of the pedal. I think it is worth the 4 dollers and like 5 mins to put on. JMO.

 

[BigBlue'06]

Will this work on my "06 LLY?

 

[psyco66]

Yes it will.

 

[sdrllc1]

stupid question time,why is that hole there in the first place and can i do this on my lmm?? thanks.

 

[Landscapeman]

Is there any other benefits?

 

[Landscapeman]

Also any Cons?

 

[BigRedChevy]

stupid question time,why is that hole there in the first place and can i do this on my lmm?? thanks.

That is the resonator for the turbo. It is there just to keep the turbo noise down.

 

[BigRedChevy]

Is there any other benefits?

Also any Cons?

No other benefits or cons that i am aware of.

 

[psyco66]

I think the turbo spools faster but it is hard to tell with out a boost guage. I think it is worth the 4 dollers to get the whistle.

 

[BigRedChevy]

From what i have been told the turbo doesent spool any faster. Someone on another forum logged it with efi live. It seems like it spools faster but i just think it seems like it because you can hear it better.

 

[Landscapeman]

I'll give it a try. Hardware store here I come!

 

[deeretracks]

It dose have one pro..... There have been some of the resonators that have cracked and thy will pull dust into the motor. So by plugging it off you wont have to worry about it.

 

[duramaxin14]

U can do this mod on all duramax motors from 01 and up. The turbo does spool a little quicker. The reason being all that is basically in that box is back pressure from the turbo. Its kinda hard to explain but when u plug it off there is no where for it to go except back to the turbo which creates more spool and out the exhaust

 

[naterik]

the only thing i wonder is if it has any mass air volume for quick response of the throttle, like on a gas vehicle, you see those large air storage areas to kinda hold there for WOT response

but with a turbo and intercooler that the air has to travel through on a d-max it may not make any difference, i'll def. give it a shot