Will a Larger Exhaust lower my EGT's - Ford Powerstroke Diesel Forum
6.0L Performance Parts Discussion What has or has not worked for you?

Reply
 
LinkBack Thread Tools Display Modes
post #1 of 16 Old 08-08-2007, 06:22 PM Thread Starter
Powerstroke.org Rookie
 
bcype's Avatar
 
Join Date: Apr 2007
Posts: 29
Thanks: 0
Thanked 0 Times in 0 Posts
Mentioned: 0 Post(s)
Quoted: 0 Post(s)
Feedback Score: 0 reviews
Will a Larger Exhaust lower my EGT's

Just trying to get some info on how much a larger exhaust (4 or 5 inch) will do for lowering my EGT's.

Is there a difference in the temperatures on a CAT back system compaired to the turbo back?

Currently running the Edge Evo and I have no problem getting my EGT's above 1250 so I am looking for a way to lower them.

H
bcype is offline  
post #2 of 16 Old 08-08-2007, 06:25 PM
The Fat Mod
 
Logan's Avatar
 
Join Date: Aug 2006
Location: Hickory, NC
Posts: 12,509
Thanks: 0
Thanked 1 Time in 1 Post
Mentioned: 0 Post(s)
Quoted: 0 Post(s)
Feedback Score: 0 reviews
I would do a turbo back system. You can get one for pretty much the same money as a cat back system. It will def help ya run cooler.

Logan is offline  
post #3 of 16 Old 08-08-2007, 06:44 PM
Compression Ignition Addict
 
Raul@Stealth Automotive's Avatar
 
Join Date: Oct 2006
Location: Ventura County, CA
Posts: 20,359
Thanks: 23
Thanked 30 Times in 17 Posts
Mentioned: 0 Post(s)
Quoted: 0 Post(s)
Feedback Score: 2 reviews
Send a message via AIM to Raul@Stealth Automotive
i agree with logan... get yourself a 4" TB exhaust no cat or muffler...
Raul@Stealth Automotive is offline  
post #4 of 16 Old 08-08-2007, 07:05 PM
Rice Hunter
 
Diesel Freak's Avatar
 
Join Date: Aug 2007
Location: Norfolk,VA...Near the beach
Posts: 4,036
Thanks: 0
Thanked 0 Times in 0 Posts
Mentioned: 0 Post(s)
Quoted: 0 Post(s)
Feedback Score: 0 reviews
DITTO THAT!!! A GOOD MANDRELL BENDER WILL HELP STRAIGHTEN OUT THOSE RESTRICTED WRINKLES AND MAKE HER FLOW BETTER. STRAIGHT PIPE IF YA CAN GET AWAY WITH IT!! WISH YA BEST!!!
Diesel Freak is offline  
post #5 of 16 Old 08-08-2007, 07:14 PM
Banned
 
Join Date: Apr 2007
Location: Ponca City, Okla
Posts: 1,089
Thanks: 0
Thanked 0 Times in 0 Posts
Mentioned: 0 Post(s)
Quoted: 0 Post(s)
Feedback Score: 0 reviews
Send a message via MSN to Blue01F250 Send a message via Yahoo to Blue01F250
Like the others have said, go 4" Turbo back... you can straight pipe it or at least throw on a high flow muffler...

you aren't running enough horsepower to warrant a 5" exhaust unless you specifically want the look. Plus from what I've read/heard, the 5" may cause you to lose a little bit on the low end.
Blue01F250 is offline  
post #6 of 16 Old 08-08-2007, 07:17 PM
Compression Ignition Addict
 
Join Date: Oct 2006
Location: Nashville, TN
Posts: 172
Thanks: 0
Thanked 0 Times in 0 Posts
Mentioned: 0 Post(s)
Quoted: 0 Post(s)
Feedback Score: 0 reviews
Send a message via AIM to Tim99ws6
Quote:
Originally Posted by Blue01F250 View Post
you aren't running enough horsepower to warrant a 5" exhaust unless you specifically want the look. Plus from what I've read/heard, the 5" may cause you to lose a little bit on the low end.
Has this ever been "proven" or is it just here-say? Sorta like the thought that a bed cover will not improve mpg. Both were recently tested in a diesel magazine and the results do not support the myth.


2000 F350
4x4 DRW CC LB 6 spd
FBD 4" w/muffler, S&B CAI, Edge Evo I, low-rise tanneau cover, SBC ConO, SPA 2-in-1 digital pyro/egt guage.

42' GN Enclosed trailer w/ LQ
1999 Trans Am
Forged 408c.i.
275 Drag Radial
N/a
Tim99ws6 is offline  
post #7 of 16 Old 08-08-2007, 07:24 PM
Banned
 
Join Date: Apr 2007
Location: Ponca City, Okla
Posts: 1,089
Thanks: 0
Thanked 0 Times in 0 Posts
Mentioned: 0 Post(s)
Quoted: 0 Post(s)
Feedback Score: 0 reviews
Send a message via MSN to Blue01F250 Send a message via Yahoo to Blue01F250
I always heard a bed cover helps MPG??? I know when I was dumping my factory exhaust at the downpipe - my truck was gutless..until I installed the whole exhaust. But, that is why I said that is what I've read and heard...
Blue01F250 is offline  
post #8 of 16 Old 08-08-2007, 07:28 PM
Member
 
Jorkon's Avatar
 
Join Date: Jul 2006
Posts: 54
Thanks: 0
Thanked 0 Times in 0 Posts
Mentioned: 0 Post(s)
Quoted: 0 Post(s)
Feedback Score: 0 reviews
I vote for a 4 inch turbo back system with a nice crome 5 inch tip. I to have heard that you dont need a 5 inch until you get to around 600 hp, but I dont have anything that can prove that. With a 4 inch system your temps should drop a couple hundred degrees, correct my if im wrong not to sure. I wanted to get a EGT prob and then my exhaust to see how big a difference it made but I just couldnt handle myself and bought the exhaust first, just had to hear that turbo.
Jorkon is offline  
post #9 of 16 Old 08-08-2007, 07:32 PM
Compression Ignition Addict
 
Join Date: Oct 2006
Location: Nashville, TN
Posts: 172
Thanks: 0
Thanked 0 Times in 0 Posts
Mentioned: 0 Post(s)
Quoted: 0 Post(s)
Feedback Score: 0 reviews
Send a message via AIM to Tim99ws6
Quote:
Originally Posted by Blue01F250 View Post
I always heard a bed cover helps MPG??? I know when I was dumping my factory exhaust at the downpipe - my truck was gutless..until I installed the whole exhaust. But, that is why I said that is what I've read and heard...

There might be something to say for exhaust "length" then to improve/keep velocity up. I imagine it's a fine line with too much, not enough length in piping, much like a equal length primaries on headers. I know when i run open headers on my car, it doesn't lose any tq(actually it increases), but it moves the torque band higher, thereby making it "feel" slower in city driving situations....


As for the bed cover, yea i agree. In my infinite waste of time reading of the board this afternoon, i saw where someone posted that having an open bed helped "push" the truck

I think they got that off of mythbusters. But the fact is "mythbusters" was working the myth of the tailgate down vs. up to improve fuel effeciency.


These two have always been interesting issues for me....


Anyways, sorry to jack up a thread!!!

2000 F350
4x4 DRW CC LB 6 spd
FBD 4" w/muffler, S&B CAI, Edge Evo I, low-rise tanneau cover, SBC ConO, SPA 2-in-1 digital pyro/egt guage.

42' GN Enclosed trailer w/ LQ
1999 Trans Am
Forged 408c.i.
275 Drag Radial
N/a
Tim99ws6 is offline  
post #10 of 16 Old 08-08-2007, 07:43 PM
Compression Ignition Addict
 
Join Date: May 2007
Posts: 170
Thanks: 0
Thanked 0 Times in 0 Posts
Mentioned: 0 Post(s)
Quoted: 2 Post(s)
Feedback Score: 0 reviews
Quote:
Originally Posted by Tim99ws6 View Post
Has this ever been "proven" or is it just here-say? Sorta like the thought that a bed cover will not improve mpg. Both were recently tested in a diesel magazine and the results do not support the myth.

Yes this has been proven for years...Its called tuning your exhaust....Try changing the exhaust on something more noticible like a small engine or a motorcycle...See what happens...Same with a big ol turbo diesel....You just dont notice it as much....Unless your making an insane amount of power a five inch turbo back would probably hurt more than help....
Builttuff is offline  
Reply

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the Ford Powerstroke Diesel Forum forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

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









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.



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



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 On
Trackbacks are On
Pingbacks are On
Refbacks are On

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