Why cant i just cut muffler and cats out on exhaust? - Ford Powerstroke Diesel Forum

 6Likes
Reply
 
LinkBack Thread Tools Display Modes
post #1 of 43 Old 12-28-2010, 05:53 PM Thread Starter
Member
 
Join Date: Dec 2010
Posts: 36
Thanks: 0
Thanked 0 Times in 0 Posts
Mentioned: 0 Post(s)
Quoted: 0 Post(s)
Feedback Score: 0 reviews
Why cant i just cut muffler and cats out on exhaust?

Hey guys i'm new to diesels so this might be a dumb question. I bought a custom sct tune and now looking to upgrading exhaust.

Instead of spending money on straight pipe 4"exhaust why can't I just cut off the cats and muffler off my stock exhaust??? I know its only 3.5" but only having a tune I dont see it making a huge difference besides on my wallet as I only pull a 8000lb boat every now and then during the summer???

Will it sound different?

or should i just cut cats off or muffler or both??

Thanks
chargedc5 is offline  
post #2 of 43 Old 12-28-2010, 05:58 PM
Powerstroke.org Fanatic
 
top dollar's Avatar
 
Join Date: Apr 2010
Location: new florance Pa
Posts: 138
Thanks: 0
Thanked 0 Times in 0 Posts
Mentioned: 0 Post(s)
Quoted: 0 Post(s)
Feedback Score: 0 reviews
need input? what year what state ? the basics

190cc injectors,air dog150, stage II fuel supply, custom turbo , SCT X3 tuned by eric at innovative , afe cold air intake ,zoodad, arp studs, snow meth.injection, 5in straight pipes to 8in stacks, innovative uppipe, triple pod with glow shift, remote oil cooler and filters, sinister egr delete , all by myself with cab on , never do it again!!!! and alot of good info from org
top dollar is offline  
post #3 of 43 Old 12-28-2010, 06:07 PM Thread Starter
Member
 
Join Date: Dec 2010
Posts: 36
Thanks: 0
Thanked 0 Times in 0 Posts
Mentioned: 0 Post(s)
Quoted: 0 Post(s)
Feedback Score: 0 reviews
2006 f250fx4 crew cab...Indiana (no emission testing). o ya w/k&n filter
chargedc5 is offline  
post #4 of 43 Old 12-28-2010, 06:10 PM
Compression Ignition Addict
 
mah77's Avatar
 
Join Date: Sep 2010
Location: Northern California
Posts: 556
Thanks: 0
Thanked 2 Times in 2 Posts
Mentioned: 0 Post(s)
Quoted: 0 Post(s)
Feedback Score: 0 reviews
You'll hear the turbo spool a lot better. Try it, and if you don't like it, buy a 4" Straight Pipe System.

06 F250 FX4 Lariat, 35" Nitto Terra Grapplers, 6" Lift Leveled w/Bilsteins, 4" MBRP TB Exhaust w/Cat Delete, Edge Insight w/EGT Probe & Dash Pod, SCT X3 w/SRL Tune From Matt @ Gearhead, Powerslot Rotors, Hawk Pads, Upgraded Oil Cooler Screen, Upgraded Turbo Drain Tube, Upgraded STC Fitting, Upgraded FPR Spring, CAT ELC Coolant, ARP Head Studs, Opti-Lube XPD, Coolant Filter, 45K Miles
mah77 is offline  
post #5 of 43 Old 12-28-2010, 06:11 PM
Compression Ignition Addict
 
Join Date: Oct 2009
Location: Spring, Tx
Posts: 375
Thanks: 0
Thanked 1 Time in 1 Post
Mentioned: 0 Post(s)
Quoted: 0 Post(s)
Feedback Score: 0 reviews
that's how much truck is done. sounds good.

i didn't see a reason to upgrade to 4" for a few hundred, and 5" is worthless unless you have enough HP
75' forty is offline  
post #6 of 43 Old 12-28-2010, 06:11 PM Thread Starter
Member
 
Join Date: Dec 2010
Posts: 36
Thanks: 0
Thanked 0 Times in 0 Posts
Mentioned: 0 Post(s)
Quoted: 0 Post(s)
Feedback Score: 0 reviews
Quote:
Originally Posted by mah77 View Post
You'll hear the turbo spool a lot better. Try it, and if you don't like it, buy a 4" Straight Pipe System.
would you keep the muffler?
chargedc5 is offline  
post #7 of 43 Old 12-28-2010, 06:13 PM
Compression Ignition Addict
 
travisH3's Avatar
 
Join Date: Jul 2010
Location: Cincinnati
Posts: 4,317
Thanks: 6
Thanked 41 Times in 40 Posts
Mentioned: 1 Post(s)
Quoted: 1 Post(s)
Feedback Score: 13 reviews
thats what we did to our f450 dump truck. the cab and chassis exhaust is alot more expensive than exhaust for a non-cab and chassis so i bought the cat delete pipe which was about 60 something then we cut the muffer out. sounds just like my truck yet i spent a couple hundred vs 60 something for the cat delete and whatever you use to replace muffler. i just put a 90 on it and dumped it in front of the back tire

T-rav
2010 F350 6.4- H&S Single turbo kit, 5" flo pro,No limit SS cold side kit, No Limit intake, MPD billet CCV/oil filler, newton leveling kit, RED Newton traction bars, custom projector retrofit in oem lights and a bunch of LED lights LOL

Holderdown Performance #teamHDP

OUR FLEET: 2015 f450, 2014 Platinum F350, 2012 F450 6.7, 2010 F350 6.4, 2005 F350 6.0, 04 F450 6.0
travisH3 is offline  
post #8 of 43 Old 12-28-2010, 06:15 PM
Compression Ignition Addict
 
mah77's Avatar
 
Join Date: Sep 2010
Location: Northern California
Posts: 556
Thanks: 0
Thanked 2 Times in 2 Posts
Mentioned: 0 Post(s)
Quoted: 0 Post(s)
Feedback Score: 0 reviews
It's not that much louder without it.

06 F250 FX4 Lariat, 35" Nitto Terra Grapplers, 6" Lift Leveled w/Bilsteins, 4" MBRP TB Exhaust w/Cat Delete, Edge Insight w/EGT Probe & Dash Pod, SCT X3 w/SRL Tune From Matt @ Gearhead, Powerslot Rotors, Hawk Pads, Upgraded Oil Cooler Screen, Upgraded Turbo Drain Tube, Upgraded STC Fitting, Upgraded FPR Spring, CAT ELC Coolant, ARP Head Studs, Opti-Lube XPD, Coolant Filter, 45K Miles
mah77 is offline  
post #9 of 43 Old 12-28-2010, 06:19 PM
Powerstroke.org Fanatic
 
top dollar's Avatar
 
Join Date: Apr 2010
Location: new florance Pa
Posts: 138
Thanks: 0
Thanked 0 Times in 0 Posts
Mentioned: 0 Post(s)
Quoted: 0 Post(s)
Feedback Score: 0 reviews
not to piss in your cereal but no emission testing dont mean you can just cut crap off
do you (know) someone that can inspect it. technicly to pass you must have a cat and muffler on . if you know someone then by all means cut away

190cc injectors,air dog150, stage II fuel supply, custom turbo , SCT X3 tuned by eric at innovative , afe cold air intake ,zoodad, arp studs, snow meth.injection, 5in straight pipes to 8in stacks, innovative uppipe, triple pod with glow shift, remote oil cooler and filters, sinister egr delete , all by myself with cab on , never do it again!!!! and alot of good info from org
top dollar is offline  
post #10 of 43 Old 12-28-2010, 06:24 PM
Compression Ignition Addict
 
Ironmover's Avatar
 
Join Date: Apr 2010
Location: All over the dang place
Posts: 523
Thanks: 0
Thanked 0 Times in 0 Posts
Mentioned: 0 Post(s)
Quoted: 0 Post(s)
Feedback Score: 0 reviews
Welcome to the .org

Heck yea she'll sound different. Crash course real quick about what to expect. One is your EGTs will benefit from less restriction especially since you're towing. There are also three different turbo designs in regards to the exhaust turbine. '03 10 blades which whistle like a turbine jet engine and well since right off the top of my head I can't remember the next count for the specific years they maxed out in '07 with 17 if I remember right which in short the more exhaust blades the quieter the whistle and more "hair drier" sound you'll get but they still sound awesome irregardless Yes you can s***can the muffler no questions asked. It's the first thing you should do. As far as the cat, check your local laws or use yourbest judgement but none the less there are absolutely no ill side effects for your truck or the engine and yes you'll be fine splicing 3.5" piping in place of them items.

Look around on the site some and you'll find this place to be a very helpful encyclopedia for the PSD.

Stock sucks
More torque pleeze

21st century participant of the 2nd amendment
Republican
Ironmover 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 Off
Trackbacks are On
Pingbacks are On
Refbacks are On

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