Opinion on exhaust setup. - DodgeIntrepid.Net Forums - Dodge Intrepid, Concorde, 300m and Eagle Vision chat
Reply
 
LinkBack Thread Tools Rate Thread Display Modes
post #1 of 19 (permalink) Old 03-08-2007, 10:59 AM Thread Starter
 
Join Date: Feb 2007
Posts: 29
Feedback: 0 / 0%
                     
Opinion on exhaust setup.

I have a 2002 2.7L. I want to get an exhaust system but, I'm not sure if I should keep the front collector or should I get rid of it. I've heard people talk about back pressure. Will I have a problem wit that If I remove the front collector?

Heres the pic of the setup I want.



Heres a pic if I kept the front collector




let me know what you think
Thanks guys
cperez4483 is offline  
Sponsored Links
Advertisement
 
post #2 of 19 (permalink) Old 03-08-2007, 11:15 AM
Intrepid Pro
 
Phuckin Phil's Avatar
 
Join Date: Jul 2006
Location: Near Los Angeles
Posts: 3,645
Feedback: 6 / 100%
                     
Off the stock collector and never look back. Thats kind of weird though. On the first gens the location of what you call a collector, is where my big caddie is.

Last edited by Phuckin Phil; 03-08-2007 at 11:18 AM.
Phuckin Phil is offline  
post #3 of 19 (permalink) Old 03-08-2007, 11:17 AM
Intrepid Pro
 
RCE2WIN's Avatar
 
Join Date: Jun 2001
Location: Farmington Hills, MI
Posts: 2,660
Feedback: 4 / 100%
                     
I kept the stock collector in my setup on my 3.5L. I didn't want the car too loud or to kill the mpg, so i left it in and really like how it sounds and performs. If i didn't, i could always take it out and replace it with a "Y" pipe where the collector sits. I ran my 1st gen with too little backpressure for a while and it performed worse and drank gas. Also depends on the mufflers you're planning on running too.
RCE2WIN is offline  
Sponsored Links
Advertisement
 
post #4 of 19 (permalink) Old 03-08-2007, 11:34 AM
Intrepid Modder
 
95LHS's Avatar
 
Join Date: Oct 2004
Location: Massachusetts
Posts: 683
Feedback: 0 / 0%
                     
Backpressure is bad in every way, shape and form (unless of course your Intrepid is carburetted).
95LHS is offline  
post #5 of 19 (permalink) Old 03-08-2007, 11:39 AM Thread Starter
 
Join Date: Feb 2007
Posts: 29
Feedback: 0 / 0%
                     
Quote:
Originally Posted by 95LHS
Backpressure is bad in every way, shape and form (unless of course your Intrepid is carburetted).

Cool!!!

I'm pretty sure its not Carburetted!! LOL!!!

So, the more free following the Better???
cperez4483 is offline  
post #6 of 19 (permalink) Old 03-08-2007, 11:41 AM
 
Join Date: Oct 2006
Posts: 4
Feedback: 0 / 0%
                     
Kept the collector on mine, ran same pip to a dual channel Magna Flow and ran pipes out of either side. Like Rce says, you can always take it off later.
Court is offline  
post #7 of 19 (permalink) Old 03-08-2007, 11:44 AM
Intrepid Pro
 
Phuckin Phil's Avatar
 
Join Date: Jul 2006
Location: Near Los Angeles
Posts: 3,645
Feedback: 6 / 100%
                     
I know I am a first gen here and everything guys but I am running straight pipes and everyone who hears it is fully impressed. Not suggesting you do it, but I sure am glad I did!
Phuckin Phil is offline  
post #8 of 19 (permalink) Old 03-08-2007, 11:53 AM
Intrepid Modder
 
95LHS's Avatar
 
Join Date: Oct 2004
Location: Massachusetts
Posts: 683
Feedback: 0 / 0%
                     
Lightbulb

Quote:
Originally Posted by cperez4483
Cool!!!

I'm pretty sure its not Carburetted!! LOL!!!

So, the more free following the Better???
Well first off I want to state that I'm by no means an exhaust pro. I can however tell you the backpressure thing is a myth.

Note that while free-flow is crucial, you can't just slap on dual 3" pipes. For best performance, you need the exhaust gases to exit through the exhaust system as fast as possible (you'll hear lots of references to "exhaust velocity"). This is achieved by selecting the right sized pipe.

If you go too big, then your exhaust velocity will go way down, hurting performance (although some try to reason that it's the back-pressure drop that hurts performance...not true, it's velocity).

If you go too small, you create a restriction (back-pressure) and will also hurt performance.

The ultimate goal is to maximize exhaust velocity and minimize back-pressure. How to achieve that? Someone more experienced than I will have to help you there.
95LHS is offline  
post #9 of 19 (permalink) Old 03-08-2007, 12:04 PM Thread Starter
 
Join Date: Feb 2007
Posts: 29
Feedback: 0 / 0%
                     
Quote:
Originally Posted by 95LHS
The ultimate goal is to maximize exhaust velocity and minimize back-pressure. How to achieve that? Someone more experienced than I will have to help you there.
Well, I by far am no expert in exhaust but it seems to me that the collector would minimize exhaust velocity and maximize back-pressure.

And thats the oppisite of what I would want
cperez4483 is offline  
post #10 of 19 (permalink) Old 03-09-2007, 02:23 AM
 
Join Date: Aug 2006
Posts: 58
Feedback: 0 / 0%
                     
don't the cats create back pressure anyway?
Matt_Q is offline  
post #11 of 19 (permalink) Old 03-09-2007, 02:58 AM
 
Join Date: Oct 2005
Posts: 1,184
Feedback: 0 / 0%
                     
Quote:
Originally Posted by Matt_Q
don't the cats create back pressure anyway?
Not too much, they're pretty free flowing.

Unless you have a clogged cat...then yes, it won't flow all that well :p
02R/T is offline  
post #12 of 19 (permalink) Old 03-13-2007, 10:30 PM
The Womanizer!

 
inthetundra's Avatar
 
Join Date: Mar 2007
Location: Central Wisconsin
Posts: 2,964
Feedback: 15 / 100%
                     
duh

Last edited by inthetundra; 03-13-2007 at 10:33 PM.
inthetundra is offline  
post #13 of 19 (permalink) Old 03-13-2007, 10:31 PM
The Womanizer!

 
inthetundra's Avatar
 
Join Date: Mar 2007
Location: Central Wisconsin
Posts: 2,964
Feedback: 15 / 100%
                     
I went with the stainless magnaflow kit from trubendz for my 03 SXT
It fit good, looks and sounds pretty nice, isn't obnoxious but you can hear it. I am still thinking of making a stainless Y for it. It can always be taken out if it is to loud.
inthetundra is offline  
post #14 of 19 (permalink) Old 03-13-2007, 10:34 PM
 
Join Date: Oct 2005
Posts: 1,184
Feedback: 0 / 0%
                     
Pics? Sound clip? Dont keep us hanging!!! :p

Are you going to make a stainless Y? or are you going to pay someone to make one?
You can either bend an existing Y to fit, or bend/weld one up yourself.
02R/T is offline  
post #15 of 19 (permalink) Old 03-13-2007, 10:42 PM
Intrepid Pro
 
Torontofirecaptain's Avatar
 
Join Date: Apr 2004
Location: Whitby, Ontario
Posts: 3,934
Feedback: 71 / 100%
                     
Quote:
Originally Posted by cperez4483
Well, I by far am no expert in exhaust but it seems to me that the collector would minimize exhaust velocity and maximize back-pressure.

And thats the oppisite of what I would want
Doesn't really do too much restricting, any more than the cats do.

The front resonator is completely hollow, with a 2+" inlet on each side, that is diverted by a very few large baffles into the 2 1/2" single outlet. The cats are the same - you look right straight through them, nothing much to cause any backpressure.
Unless you are running at full throttle all of the time, it is a moot point anyway, since the flow under most normal driving conditions is more than adequate.
The worst part of the stock exhaust is the bend from the centre muffler to the rear resonator.
If you are - as you would with any aftermarket quality exhaust - be replacing that portion with a nice smoothly bent pipe, you'll eliminate the majority of the restriction.


goal - have one of my parts on every DI car:biggrinfl
Honoured to be January 2007 COTM.THANK YOU ALL.
Torontofirecaptain is offline  
Sponsored Links
Advertisement
 
Reply

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the DodgeIntrepid.Net Forums - Dodge Intrepid, Concorde, 300m and Eagle Vision chat forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

Member names may only be composed of alpha-numeric characters. (A-Z and 0-9)

!!ATTENTION ADVERTISERS!! If you intend on advertising anything on this forum, whatsoever, you are required to first contact us here . Additionaly, we do NOT allow BUSINESS NAMES unless you are an Authorized Vendor. If you own a business, and want to do sales on this site via posting or private message, you will need to follow the rules. Shops, Stores, Distributors, Group Buys without being authorized will see your account terminated.

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:
OR

Log-in










Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes Rate This Thread
Linear Mode Linear Mode
Rate This Thread:



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

 
For the best viewing experience please update your browser to Google Chrome