Air tube from air cleaner to throttle body - Diesel Place : Chevrolet and GMC Diesel Truck Forums
 
Home Forum Market Place Garage Tuning Library DTC Tool Register Vendors
Go Back   Diesel Place : Chevrolet and GMC Diesel Truck Forums > Other Vehicles > GM Gassers
Register FAQ Forum Rules My Replies My Threads Advertise

GM Gassers Discuss the GM 5.3L, 5.7L, 6.0L & 8.1L gas engines & associated components.


DieselPlace.com is the premier Duramax Diesel Forum on the internet. Registered Users do not see the above ads.
Like Tree1Likes
  • 1 Post By TIMINATOR

Reply
 
LinkBack Thread Tools
Old 11-06-2018, 01:34 PM   #1 (permalink)
volks1963
Gear Grinder
 
Join Date: Nov 2018
Location: Sparks NV
Posts: 4
iTrader Score: 0 reviews

Air tube from air cleaner to throttle body

I have a 2006 GMC 2500HD with the 8.1 liter V8. The tube from the air cleaner to the throttle body has a growth that extends below the tube. Does anyone know what this is for? Has anyone removed it to smooth the air flow?
Thanks

__________________
2006 GMC 2500HD
8.1 Allison 1000
4 wheel drive, 3:73
Long bed standard cab
Offline  
Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
Old 11-06-2018, 02:04 PM   #2 (permalink)
davester
Diesel Superstar
 
Join Date: May 2015
Posts: 3,998
iTrader Score: 0 reviews

That odd lump (also present for other engine sizes/types) is to reduce the sound of the intake.


cold-air intakes generally switch it to a smooth tube (course, the oem setup is already a CAI), with the promise of some ridiculous power increase, but in reality, likely the only measurable increase will be in noise...

__________________
2004 GMC Sierra 3500 C&C, added 4WD, 6.0L gas, Extended Cab, SLE, Transgo 4L80e-HD2 kit installed
Whee! Dually Club Member #1109
Offline   Reply With Quote Quick reply to this message
Old 11-07-2018, 09:09 AM   #3 (permalink)
Drakito
Diesel Fanatic
 
Drakito's Avatar
 
Join Date: Feb 2016
Location: Southern Utah
Posts: 124
iTrader Score: 0 reviews

davester is correct. They are called resonators and they seriously reduce the "suck" noise at full throttle. Many a person has removed it and patched the hole to be smooth. Search intake mods here and you will see several good write ups.
Offline   Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
Old 11-07-2018, 10:51 AM   #4 (permalink)
DEWFPO
Diesel Boss
 
DEWFPO's Avatar
 
Join Date: Jan 2005
Location: "High in the Rockies"
Posts: 1,354
iTrader Score: 0 reviews

I realize your talking about airflow but I've measured the IAT (Intake Air Temp) against outside ambient temp and at highway speeds, the factory set up is within 5 degrees. Pretty darn good.

DEWFPO
__________________
2005, Chevrolet 2500HD CC SB, 8.1L, 4.10's,
G80, Dual Batteries, 145 Amp Alt., Bilsteins, Green Diamond 265's, Retrax Retractable Hard Tonneau, PUTCO SS Bed Rails, Bushwacker Bed Rail Protectors, GM SS Tube Steps, Prodigy Brake Controller, CubbyCam BackUp Camera with Tailgate Handle Camera Mount, Hi-Lo-Fogs on HIGH
Offline   Reply With Quote Quick reply to this message
Old 12-15-2018, 11:33 AM   #5 (permalink)
TIMINATOR
Clutch
 
Join Date: Mar 2015
Location: Avondale,AZ. (West Phoenix,AZ.)
Posts: 73
iTrader Score: 0 reviews

Cutting off and patching the hole where the Helmholtz resonator was adds a small amount of air flow and also cools the intake air slightly, with only a small increase in intake noise. Mine had a large "divot" in the crossover tube that can be removed carefully with the rounded end of a baseball bat, propane torch and patience. Both can be seen on the flow bench and intake air temp. TIMINATOR
__________________
"Modesty is a crutch for the incompetent"
Offline   Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
Reply

Quick Reply
Message:
Options

Register Now

In order to be able to post messages on the Diesel Place : Chevrolet and GMC Diesel Truck Forums forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

PLEASE READ! You must check your email inbox for the confirmation link to complete registration. Please check your spam box if you do not see the email in your inbox.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.
Password:
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:
Insurance
Please select your insurance company (Optional)

Log-in



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
LMM: 97chevor 2010 GMC 2500 Maintenance log 97chevor Truck Uses 112 05-24-2019 07:59 PM
LMM: Surging while in gear darreng Duramax Fourth Generation: 2007.5-2010 (LMM) 18 02-22-2017 06:53 PM
8.1 Vortec, throttle body, adapter, harness 3500Silverado GM Gassers 1 10-05-2016 12:10 AM
LMM: crank, no start, erratic misfire codes only justaguy Duramax Fourth Generation: 2007.5-2010 (LMM) 13 08-26-2016 07:44 PM
Serging/hesitation Brock 7654 6.5L Diesel Engine 38 09-24-2015 05:45 PM


All times are GMT -4. The time now is 08:43 PM.


Powered by vBulletin® Version 3.8.8
Copyright ©2000 - 2019, vBulletin Solutions, Inc.
SEO by vBSEO 3.6.1
vBulletin Security provided by vBSecurity v2.2.2 (Pro) - vBulletin Mods & Addons Copyright © 2019 DragonByte Technologies Ltd.
Shoutbox provided by vBShout v6.2.1 (Lite) - vBulletin Mods & Addons Copyright © 2019 DragonByte Technologies Ltd. Runs best on HiVelocity Hosting.
© AutoGuide