LBZ/ALLI resonator delete - Diesel Place : Chevrolet and GMC Diesel Truck Forums
 
Home Forum Market Place Garage Lounge (0) Tuning Library DTC Tool Register Vendors
Go Back   Diesel Place : Chevrolet and GMC Diesel Truck Forums > Power, Performance & Tuning > Fuel System, Air, Exhaust, & Emissions Upgrades
Register FAQ Forum Rules My Replies My Threads Mark Forums Read Auto EscrowAuto LoansInsurance

DieselPlace.com is the premier Duramax Diesel Forum on the internet. Registered Users do not see the above ads.
Closed Thread
 
LinkBack Thread Tools
Old 04-10-2008, 11:19 PM   #1 (permalink)
my1stduramax
Diesel Head
 
Join Date: Mar 2007
Location: Hawaii / California
Posts: 33
iTrader Score: 0 reviews

LBZ/ALLI resonator delete

What is this ,LBZ/ALLI resonator delete
__________________
2012 GMC Sierra 3500 C/C, L/B, SRW. All stock for now. B&W flip over ball hitch very soon.

Traded - '07 Gmc Classic Duramax C/C S/B ,20"X9" Goliath Ultra Wheels w/ 33/12.50/20 Toyo Open Country Tires, Banks Six-Gun w/ PDA Tuner, Intake & Monster Exaust, Recon Lighting under rocker panels, Smoked Cab Lights and Light Bar under tailgate, Leer Cab-Hi Topper (Seasonal), Pro Tech Tool Box w/ Headache Rack, Eclipse Navigation w/ DVD & Sirius Sat. Radio, N-Fab Nerf Steps, Trans-Go JR. B&W Flip-over hitch
Offline  
Quick reply to this message
Sponsored Links
Advertisement
 
Old 04-11-2008, 12:15 AM   #2 (permalink)
whitetrash21
Diesel Master
 
whitetrash21's Avatar
 
Join Date: Dec 2006
Location: VEGAS
Posts: 1,530
iTrader Score: 1 reviews

702 Duramax Crew Member

a resonator delete is removing the resonator off the top of the motor. its that plastic piece that says "duramax 6.6 turbo diesel" on it. that piece is supposed to help neutralize the intake sounds (ie, turbo noise) that come off the motor. removing it makes the turbo a 'little' more audible at lower rpms..... see garage for pics. you can see a 2" pipe cap on the intake that covers the hole left by removing the resonator. some people use pipe plugs in that hole and put the resonator back over it to keep the factory look....

im assuming thats what you are talkin about....
__________________
Wes


Last edited by whitetrash21; 04-11-2008 at 12:17 AM.
Offline   Quick reply to this message
Old 04-11-2008, 03:25 PM   #3 (permalink)
Z71 Grizzly
Diesel Master
 
Z71 Grizzly's Avatar
 
Join Date: Mar 2004
Location: N Fairfield,Ohio
Posts: 1,320
iTrader Score: 0 reviews

Buckeye Oil Burners Member

I just put a Fernco 2" cap on mine after reading through different things about doing it. I think I noticed a change in spoolup and it definitely slightly unmuffles what the resonator is supposed to do. I'm going to leave it on. If it helped, It only did maybe a **** hair.
__________________
05 Silverado HD CCSB Dark Grey Metallic, . All headlight on mod Kelly Safari TSR 265/75/16, Weathertech Floorliners. Prodigy, Diamond Eye downpipe, Magnaflow 5" DP back, EFI , Airdog,DSP5, Custom tool steel sleeves. Cognito Idler/Pitman braces Some other goodies too

Old truck: 96Chevy Z71 extcb sb 4" Rancho
Old fourwheeler:03 Yamaha Grizzly660LE w/27" Bi/Tri Claws and custom snorkels. Want a Can-Am fourwheeler next maybe

"Nothing is Impossible, Some things are just harder than others"
Offline   Quick reply to this message
Old 04-12-2008, 01:11 AM   #4 (permalink)
my1stduramax
Diesel Head
 
Join Date: Mar 2007
Location: Hawaii / California
Posts: 33
iTrader Score: 0 reviews

Thanks guys for the info
will it hurt anything if i do it, because i only have 11000 on the truck now, but i would like to have alittle more turbo sound
__________________
2012 GMC Sierra 3500 C/C, L/B, SRW. All stock for now. B&W flip over ball hitch very soon.

Traded - '07 Gmc Classic Duramax C/C S/B ,20"X9" Goliath Ultra Wheels w/ 33/12.50/20 Toyo Open Country Tires, Banks Six-Gun w/ PDA Tuner, Intake & Monster Exaust, Recon Lighting under rocker panels, Smoked Cab Lights and Light Bar under tailgate, Leer Cab-Hi Topper (Seasonal), Pro Tech Tool Box w/ Headache Rack, Eclipse Navigation w/ DVD & Sirius Sat. Radio, N-Fab Nerf Steps, Trans-Go JR. B&W Flip-over hitch
Offline   Quick reply to this message
Old 04-12-2008, 01:19 AM   #5 (permalink)
first timer 6.6
Diesel Technician
 
first timer 6.6's Avatar
 
Join Date: Aug 2007
Location: St.Louis, MO
Posts: 364
iTrader Score: 0 reviews

Midwest Smokers Member

Go for it. I removed mine at 2,ooo and it wont be back on there ever again!! It will not hurt anything. Just make sure you plug it before you start your rig again.
__________________
07 Chevy 2500 HD 6.6 Duramax LBZ CC std bed
ispro gagues Pyro,boost,tranny
EFI Live Baby/ with the dsp5 switch
all windows tinted,tanneau cover
all on headlight mod,air raid intake
Blocked and Fingeredand
4" Mbrp is on no muffler, Diamond eye down pipe
Tie rod sleves added
LED'S in tow Mirrors orange running and red turning lights, now leveled, Fuel rail Plug, Black Bow Tie
Amsoil duel bypass filter

www.alligatorperformance.com
Offline   Quick reply to this message
Old 04-12-2008, 01:23 AM   #6 (permalink)
Unit453
Diesel Sr. Technical Member
 
Unit453's Avatar
 
Join Date: Sep 2004
Location: Sarasota, Florida
Posts: 7,250
iTrader Score: 1 reviews

CNY Diesel Club Member

Armed Forces Club Member

Mine was plugged an hour after bringing the truck home from the dealership.

On a stock truck, it'll make the intake a bit throatier.
__________________
2011 Challenger R/T 5.7L


Offline   Quick reply to this message
Old 04-28-2009, 06:41 PM   #7 (permalink)
ARZ
Diesel Technician
 
Join Date: Apr 2009
Location: Mesa AZ
Posts: 255
iTrader Score: 1 reviews

Sorry to resurrect such an old thread but....

I did a search on the "resonator delete" because I too, did not know what it was, Im new to this Forum. Upon finding this thread it turns out I know a little about this subject after working for Flint Powertrain and designing a few intakes for GM V6's. I thought I would shed a little light on the subject.

It is in-fact a resonator, many automotive manufacturers use them but they are known as "Helmholtz Resonators" after Hermann von Helmholtz, wicked smart physicist.

Blowing across the opening of an empty bottle is an excellent example of a Helmholtz resonator, the greater the volume the lower the tone. Obviously materials and volumes and port areas and lengths will have different effects on the tones but thats the basic principal behind it.

There are 2 objectives for this resonator, the first is to tune the resonator to cancel out the most offending frequency in an intake tract to make it quieter. The second and more beneficial is to tune the resonator to produce a positive pressure in the intake tract at a very specific frequency, very difficult to do and in my opinion not done very often in the automotive world.

Many manufacturers have multiple (I have seen as many as 4) Helmholtz resonators on one vehicle fresh air intake. On naturally aspirated cars the intake tract is much shorter causing you to hear the intake much more clearly when these are removed. Many Honda kids contribute to the fart can sound via the removal of the stock air intake and quite possibly make their cars slower.

On many (crotch rocket type) motorcycles the removal of the stock air box often reduces horsepower for this exact reason. Believe it or not many motorcycle manufacturers have actually calculated the air volume, air box shape, material properties and wall rigidity to take advantage of this Helmholtz effect and and produce positive pressure at a specific rpm. They actually design the walls of the air box to flex at the exact frequency opposite the pulse at a specific RPM range to create a ram effect and effectively give them a mini supercharging for free. Notice many air boxes on motorcycles have a double wall. The inner wall is designed to do this flexing/resonating and the outer wall is designed to look pretty or to shield the inner wall so it can keep doing its job as a resonator.

Since our intake has to travel through the turbo, Intercooler, and all that plumbing the only sound left for it to cancel is probably some turbo whine and another frequency we (in the cab) could never have heard anyways, because the vehicle is probably going to fast for you to ever have heard it.

By calculating the volume of the body of the resonator (the spring) and the port diameter and length (venturi) it would be easy to tell what frequency they were tuning to actually cancel, because Im pretty confident they were not tuning for power or positive pressure.
Offline   Quick reply to this message
Old 04-28-2009, 08:21 PM   #8 (permalink)
DMAX Will
Diesel Specialist
 
DMAX Will's Avatar
 
Join Date: Nov 2007
Location: Washington
Posts: 618
iTrader Score: 0 reviews

Quote:
Originally Posted by ARZ View Post
Sorry to resurrect such an old thread but....

I did a search on the "resonator delete" because I too, did not know what it was, Im new to this Forum. Upon finding this thread it turns out I know a little about this subject after working for Flint Powertrain and designing a few intakes for GM V6's. I thought I would shed a little light on the subject.

It is in-fact a resonator, many automotive manufacturers use them but they are known as "Helmholtz Resonators" after Hermann von Helmholtz, wicked smart physicist.

Blowing across the opening of an empty bottle is an excellent example of a Helmholtz resonator, the greater the volume the lower the tone. Obviously materials and volumes and port areas and lengths will have different effects on the tones but thats the basic principal behind it.

There are 2 objectives for this resonator, the first is to tune the resonator to cancel out the most offending frequency in an intake tract to make it quieter. The second and more beneficial is to tune the resonator to produce a positive pressure in the intake tract at a very specific frequency, very difficult to do and in my opinion not done very often in the automotive world.

Many manufacturers have multiple (I have seen as many as 4) Helmholtz resonators on one vehicle fresh air intake. On naturally aspirated cars the intake tract is much shorter causing you to hear the intake much more clearly when these are removed. Many Honda kids contribute to the fart can sound via the removal of the stock air intake and quite possibly make their cars slower.

On many (crotch rocket type) motorcycles the removal of the stock air box often reduces horsepower for this exact reason. Believe it or not many motorcycle manufacturers have actually calculated the air volume, air box shape, material properties and wall rigidity to take advantage of this Helmholtz effect and and produce positive pressure at a specific rpm. They actually design the walls of the air box to flex at the exact frequency opposite the pulse at a specific RPM range to create a ram effect and effectively give them a mini supercharging for free. Notice many air boxes on motorcycles have a double wall. The inner wall is designed to do this flexing/resonating and the outer wall is designed to look pretty or to shield the inner wall so it can keep doing its job as a resonator.

Since our intake has to travel through the turbo, Intercooler, and all that plumbing the only sound left for it to cancel is probably some turbo whine and another frequency we (in the cab) could never have heard anyways, because the vehicle is probably going to fast for you to ever have heard it.

By calculating the volume of the body of the resonator (the spring) and the port diameter and length (venturi) it would be easy to tell what frequency they were tuning to actually cancel, because Im pretty confident they were not tuning for power or positive pressure.
Sooo..removing the resonator is bad on ricers and rockets, but we should be fine if we block ours off?
__________________
2006 LBZ
Portland DP Chapter Member #33
Offline   Quick reply to this message
Old 04-28-2009, 09:53 PM   #9 (permalink)
dmaxfireman
Diesel Specialist
 
dmaxfireman's Avatar
 
Join Date: Jan 2007
Location: Fairfield, CT
Posts: 839
iTrader Score: 0 reviews
Send a message via AIM to dmaxfireman

CT Smoke Member

i replaced my resonator with a gt45
__________________
2006 Silverado Regular Cab / Long Bed
LBZ Duramax / Allison 1000
SOLD!


--Team Salad--

Smarter than the average bear


Offline   Quick reply to this message
Old 04-29-2009, 12:56 AM   #10 (permalink)
ARZ
Diesel Technician
 
Join Date: Apr 2009
Location: Mesa AZ
Posts: 255
iTrader Score: 1 reviews

Quote:
Originally Posted by DMAX Will View Post
Sooo..removing the resonator is bad on ricers and rockets, but we should be fine if we block ours off?
Yea thats correct. I dont KNOW if any auto manufacturers are tuning for HP with a Helmholtz resonator, but I cant imagine all of them are not exploring this option.

Yea, us with turbos and a crazy long intake plumbing probably will not be affected by removing the resonator.

Just motorcycle manufacturers as far as I know are the only ones that are definitely taking advantage of this for extra HP.

Last edited by ARZ; 04-29-2009 at 01:20 AM.
Offline   Quick reply to this message
Sponsored Links
Advertisement
 
Closed Thread

Thread Tools

Posting Rules
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
PCV reroute, with or with out resonator delete? 06CCLBZ Duramax Third Generation: 2006-2007.5 (LBZ & LLY) 4 03-31-2011 07:56 PM
resonator delete dirtymax44 Fuel System, Air, Exhaust, & Emissions Upgrades 14 06-04-2010 08:30 PM
New Product - Billet Resonator Delete Plug AlligatorPerformance Fuel System, Air, Exhaust, & Emissions Upgrades 23 05-13-2010 01:45 PM
Fernco resonator delete question GNBEAST Fuel System, Air, Exhaust, & Emissions Upgrades 10 05-14-2009 11:32 AM
Resonator Delete Using A 'Qwik Cap' RoadShark Duramax Fourth Generation: 2007.5-2010 (LMM) 55 01-19-2008 07:37 PM


All times are GMT -4. The time now is 04:29 AM.


Shoutbox provided by vBShout v6.2.1 (Lite) - vBulletin Mods & Addons Copyright © 2014 DragonByte Technologies Ltd. Runs best on HiVelocity Hosting.
© AutoGuide

SEO by vBSEO 3.6.0