True Duels vs Duels with H-Pipe - Hot Rod Forum : Hotrodders Bulletin Board -- Hot Rod Forum

Register FAQ Search Today's Posts Unanswered Posts Auto Escrow Insurance Auto Loans
Hot Rod Forum : Hotrodders Bulletin Board > Tech Help> Engine
User Name
lost password?   |   register now

LinkBack Thread Tools
  #1 (permalink)  
Old 01-08-2004, 03:55 PM
dannimo's Avatar
Join Date: Jun 2003
Location: Little Rock, AR
Age: 28
Posts: 72
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
True Duels vs Duels with H-Pipe

I have a stock '98 Chevy Silverado with a 350 Vortech. I want to run true duel exhaust on it. It already has two cats stock. It am planning on putting two Flowmaster "Super 40's" (One of Flowmaster's new mufflers,not the regular 40's nor delta flow). Why does Flowmaster recommend a h-pipe on all duel exhaust. Is there noticable power gains with a h-pipe as opposed to true duels? Isn't that the point of having duels is to separate the exhaust?

Reply With Quote Quick reply to this message
Sponsored Links
  #2 (permalink)  
Old 01-08-2004, 04:12 PM
DoubleVision's Avatar
Not Considered a Senior Member
Last photo:
Join Date: Oct 2002
Location: Heart Of Dixie
Age: 41
Posts: 10,668
Wiki Edits: 0

Thanks: 15
Thanked 61 Times in 58 Posts
a H pipe is there to balance out the pressure and equalize the flow between the 2 sides, this helps low end torque and helps the exhaust to sound better, a true dual system with no balance pipe the exhuast note can be out of phase with the other side and won`t sound good at all.
Reply With Quote Quick reply to this message
  #3 (permalink)  
Old 01-08-2004, 05:27 PM
STUPID is as STUPID does...
Last wiki edit: Crankshaft Coalition Wiki Last photo:
Join Date: Nov 2003
Location: Stupidville, USA
Posts: 1,898
Wiki Edits: 1

Thanks: 13
Thanked 115 Times in 106 Posts
Read this Car Craft article... the last couple paragraphs tell the tale.
The X pipe system made 2 more horsepower then open headers and was 12 better then the H pipe.
I am looking for another article Car Craft did that compared a "big single" exhaust to your "true duals" setup. The big single made more lowend torque and got better mileage.
True duals are not what you want.
Here is another article that covers headers but the bigger is not always better theory still applies...
If you want to get some sound out of your '98 just pull the existing muffler off and put a pipe in it's place. It won't be true duals but it'll sound good and it won't cost an arm and a leg or any lowend torque.
Reply With Quote Quick reply to this message

Recent Engine posts with photos

Quick Reply

Register Now

In order to be able to post messages on the Hot Rod Forum : Hotrodders Bulletin Board forums, you must first register.
Please enter your desired user name (usually not your first and last name), your email address and other required details in the form below.
User Name:
Please enter a password for your user account. Note that passwords are case-sensitive.
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:
Please select your insurance company (Optional)


Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
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

All times are GMT -6. The time now is 12:24 AM.

Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2015, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0 PL2
Copyright 1999 - 2012. All Rights Reserved.