Darn Exhaust
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Senior User
Joined: Aug 2011
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Darn Exhaust
Alright guys and gals. I have been searching the forums, google, and youtube for an answer to my exhaust question. And i cant find an one that deals with what i wanna do.
I have an 01 5.4L SD and its as quite as my moms accord. Me being a poor college student, I have no money for anything right now. And i want my truck to be louder.
So I got this bright idea to just chop the exhaust off right before the muffler. The pipe left would end just after the cab, under the bed. So i was thinking id just slap on a tip that aimed down and have that be how i ran it till i got some money for a nice setup.
My questions are: Can i leave the pipe short like that? Will it sound like pure poo if i do leave the pipe that short and not get bigger and longer piping? Will it effect performance? (Ive read yes's and no's) And has anyone done this before?
Thanks y'all!
Ps. I would leave the cats on.
I have an 01 5.4L SD and its as quite as my moms accord. Me being a poor college student, I have no money for anything right now. And i want my truck to be louder.
So I got this bright idea to just chop the exhaust off right before the muffler. The pipe left would end just after the cab, under the bed. So i was thinking id just slap on a tip that aimed down and have that be how i ran it till i got some money for a nice setup.
My questions are: Can i leave the pipe short like that? Will it sound like pure poo if i do leave the pipe that short and not get bigger and longer piping? Will it effect performance? (Ive read yes's and no's) And has anyone done this before?
Thanks y'all!
Ps. I would leave the cats on.
9 ECHO 1
Joined: Aug 2009
Posts: 12,467
Likes: 58
From: Missouri
Here.. You decide for yourself.
I dont like it, but to each his own.
In the title it says straight piped, but in the description it says the pipe is after the cat, so it is exactly what youre thinking.
2000 Ford F250 V10 Straight Piped!!! - YouTube
I dont like it, but to each his own.
In the title it says straight piped, but in the description it says the pipe is after the cat, so it is exactly what youre thinking.
2000 Ford F250 V10 Straight Piped!!! - YouTube
MMNC (SS)(Ret)
Joined: Mar 2004
Posts: 11,602
Likes: 148
From: SE Georgia
the only thing I would be worried about is fumes.
since you are cutting it off under the bed, that is a non-issue. a second worry would be soot from the exhaust all over the rear axle and under bed...again, with a 5.4 you shouldn't see too much of that.
last thing you might get is a whooping/chopping sound. I call that setup "Cop Baiters". The pulse of the exhaust is very noticeable.
Performance wise, you shouldn't lose anything. The cats provide all the backpressure for the motor. The muffler is just there for noise. So leave the cats alone and enjoy the increased volume.
since you are cutting it off under the bed, that is a non-issue. a second worry would be soot from the exhaust all over the rear axle and under bed...again, with a 5.4 you shouldn't see too much of that.
last thing you might get is a whooping/chopping sound. I call that setup "Cop Baiters". The pulse of the exhaust is very noticeable.
Performance wise, you shouldn't lose anything. The cats provide all the backpressure for the motor. The muffler is just there for noise. So leave the cats alone and enjoy the increased volume.
Senior User
Joined: Mar 2004
Posts: 209
Likes: 1
From: Innisfree, Alberta
Even if you take the muffler off you should run the pipe all the way out the back. Every time you stop or are parked for awhile you'll get exhaust in the cab, And since carbon monoxide is odorless it can be very dangerous.
Elder User
Joined: Nov 2010
Posts: 946
Likes: 0
From: Needville, TX
Alright guys and gals. I have been searching the forums, google, and youtube for an answer to my exhaust question. And i cant find an one that deals with what i wanna do.
I have an 01 5.4L SD and its as quite as my moms accord. Me being a poor college student, I have no money for anything right now. And i want my truck to be louder.
So I got this bright idea to just chop the exhaust off right before the muffler. The pipe left would end just after the cab, under the bed. So i was thinking id just slap on a tip that aimed down and have that be how i ran it till i got some money for a nice setup.
My questions are: Can i leave the pipe short like that? Will it sound like pure poo if i do leave the pipe that short and not get bigger and longer piping? Will it effect performance? (Ive read yes's and no's) And has anyone done this before?
Thanks y'all!
Ps. I would leave the cats on.
I have an 01 5.4L SD and its as quite as my moms accord. Me being a poor college student, I have no money for anything right now. And i want my truck to be louder.
So I got this bright idea to just chop the exhaust off right before the muffler. The pipe left would end just after the cab, under the bed. So i was thinking id just slap on a tip that aimed down and have that be how i ran it till i got some money for a nice setup.
My questions are: Can i leave the pipe short like that? Will it sound like pure poo if i do leave the pipe that short and not get bigger and longer piping? Will it effect performance? (Ive read yes's and no's) And has anyone done this before?
Thanks y'all!
Ps. I would leave the cats on.
Posting Guru
Joined: Jan 2007
Posts: 2,364
Likes: 3
From: Gilbert Az.
Dont do it! Especially if you ever have small children in the cab, there is a low pressure area that sets up behind the cab at speed (notice the black plastic dampers directly below back window) and co will be mixed in with your exhaust fumes and it will find a way into the cab this will make you sleepy on a long drive, you will never know what hit you!
Jim & fat Monty
Jim & fat Monty
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Tuned
Joined: Apr 2011
Posts: 334
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From: Michigan
I wouldn't leave it at the back of the cab either. You can buy a cheap glass pack for less than $50 bucks and will allow you to use the tail pipe and at least in my opinion would sound a whole lot better. I've modified the exhaust on a few vehicles and I've always preferred a 'flow through' style that gives you a performance improvement as well as good tone. After going down the highway for a few hours or doing so pulling a trailer an open exhaust pipe will drive you insane. jmho 
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Senior User
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Haha sorry bout that one.. i thought id be good with my censorship 
And thanks for the responses guys! Maybe i'll go out and buy a few feet of pipe and run it out right after the rear axle like some of the diesel guys do.
Is the stock size 2.5"?
And another factor in this is the parents. I still live at home
. And they are 100% against me having a loud truck. Is doing this gonna make it crazy loud? or will i be fine with noise at rpm's around an idle? and start up..
And thanks for the responses guys! Maybe i'll go out and buy a few feet of pipe and run it out right after the rear axle like some of the diesel guys do.
Is the stock size 2.5"?
And another factor in this is the parents. I still live at home
. And they are 100% against me having a loud truck. Is doing this gonna make it crazy loud? or will i be fine with noise at rpm's around an idle? and start up..
Post Fiend
Joined: Aug 2010
Posts: 13,710
Likes: 5
From: Manchester, CT
i actually have a video of starting and revving my truck when i was putting on my new exhaust. this is just the noise straight out of the cat... with a cell phone. was a LOT louder in person.
Senior User
Joined: Sep 2010
Posts: 306
Likes: 2
From: Southwest Desert, AZ
Read this about diesel engines, then make up your own mind. Apparently it would not make a bit of difference to cut it off short. Gasoline engines are a lot more dangerous. The big rig drivers run them all night and use their sleepers. Travelling down a road wouldn't amount to a hill of beans. Problem as I see it is the soot will accumlilate and make for a nasty job working on the rear end, brakes, trailer hitch, rear light access and bumper.
The Leuchter Report: Fumes from a diesel engine are not toxic enough to kill people.
The Leuchter Report: Fumes from a diesel engine are not toxic enough to kill people.
New User
Joined: Aug 2011
Posts: 10
Likes: 0
I have done the exact same thing you are talking about. Its loud, Ive had the neighbors cause problems because they thought i was going too fast in the neighborhood. It only sounds like that. At warm idle its not that bad to me, but at cold idle its loud enough to turn a few lights on across the street
Elder User
Joined: May 2004
Posts: 812
Likes: 1
From: Northwest Florida
yesitisrob. I hear what your saying, but I'm not sure you do! You're the one with the loud truck, yet your neighbors have caused you trouble over it? How inconsiderate of them!
Sorry, not trying to be a troll here, but I've been there.
Sorry, not trying to be a troll here, but I've been there.