Muffler or delete - Ford Powerstroke Diesel Forum
General Diesel Discussion Discuss everything else pertaining to Diesel Pickups.

LinkBack Thread Tools Display Modes
post #1 of 4 Old 09-20-2011, 06:16 PM Thread Starter Rookie
Join Date: Sep 2011
Posts: 14
Thanks: 0
Thanked 0 Times in 0 Posts
Mentioned: 0 Post(s)
Quoted: 0 Post(s)
Feedback Score: 0 reviews
Muffler or delete

I just want to know if a muffler really hurts performance or if it doesn't really make a difference. Thanks in advance.
rlawrence110 is offline  
post #2 of 4 Old 09-20-2011, 06:21 PM
Compression Ignition Addict
late_99_PSD's Avatar
Join Date: Oct 2009
Location: Taneytown, Maryland
Posts: 3,293
Thanks: 2
Thanked 11 Times in 11 Posts
Mentioned: 0 Post(s)
Quoted: 10 Post(s)
Feedback Score: 0 reviews
What truck?

The sound is good enough reason to delete the muffler, but many people notice a MPG gain when they do a straigt pipe setup.

1999.5 F-350 7.3, six-speed

late_99_PSD is offline  
post #3 of 4 Old 09-20-2011, 06:25 PM
Compression Ignition Addict
mazsecond's Avatar
Join Date: Jul 2011
Location: Boca Raton, Florida
Posts: 1,541
Thanks: 0
Thanked 0 Times in 0 Posts
Mentioned: 0 Post(s)
Quoted: 0 Post(s)
Feedback Score: 4 reviews
The stock muffler just puts more back pressure on the engine, which with a turbocharged engine the less back pressure the better. Faster turbo spool up, better response, better MPG, and a little more HP and TQ on the low end. Plus, you can't beat the sound of a straight piped 6.0!!!

mazsecond is offline  
post #4 of 4 Old 09-20-2011, 06:31 PM
Compression Ignition Addict
jse51599's Avatar
Join Date: Dec 2010
Location: St. Charles, MO
Posts: 1,135
Thanks: 1
Thanked 5 Times in 5 Posts
Mentioned: 0 Post(s)
Quoted: 0 Post(s)
Feedback Score: 0 reviews
On my L99 auto, I did a delete first and it wasn't too loud at first. But, the constant 'drone' of the exhaust on the highway was a bit much for me. I ended up w/ a Walker BTM muffler that is a straight thru design, but cancels out some of the noise. To me, I don't think there is much diff between straight pipe, or muff w/ straight thru design other than noise level. W/ the BTM, I noticed a small gain in mpg's. (I also did the 6637 mod at the same time, which probably helps too.) As w/ anything else, everyone and every truck is diff, so I would suggest a straight pipe first since it's cheaper than a muffler; if you don't like it then spend the money on a muffler. Just my opinion tho.

6637, Diamond Eye Turbo Back, Riffraff Billet Intake Plenums and Intercooler Boots, WW2, Deleted EBPV
305 70 16 Toyo A/T IIs


jse51599 is offline  

exhaust , muffler

Quick Reply

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:
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:


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