disconnected exhaust
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Senior User
Joined: Apr 2005
Posts: 186
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From: houston, texas
disconnected exhaust
i disconnected my exhaust right where the down pipe ends. the throttle seems to respond faster. my question is would this hurt anything? im worried because the exhaust gasses are being let out right under the cab. i feel like my fuel milage is being hurt, but maybe its because my foot is buried to the ground. 
man i love the sound. also. would a 4in down pipe make the sound even better?
man i love the sound. also. would a 4in down pipe make the sound even better?
Fleet Mechanic
Joined: Jun 2004
Posts: 1,296
Likes: 1
From: Coal Valley, Illinois
Originally Posted by 05f250fx4
i disconnected my exhaust right where the down pipe ends. the throttle seems to respond faster. my question is would this hurt anything? im worried because the exhaust gasses are being let out right under the cab. i feel like my fuel milage is being hurt, but maybe its because my foot is buried to the ground. man i love the sound. also. would a 4in down pipe make the sound even better?
man i love the sound. also. would a 4in down pipe make the sound even better?
Post Fiend
Joined: Feb 2006
Posts: 11,892
Likes: 2
From: Middle Tennessee
Originally Posted by 05f250fx4
i disconnected my exhaust right where the down pipe ends. the throttle seems to respond faster. my question is would this hurt anything?
Thread Starter
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Senior User
Joined: Apr 2005
Posts: 186
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From: houston, texas
so running it like this should be ok? i just came home from a 30 mile drive and it seems like im loosing mpg. should i get a 4in down pipe and then slowly build up to 5in canon? or save up for the whole 5in canon?
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Post Fiend
Joined: Feb 2006
Posts: 11,892
Likes: 2
From: Middle Tennessee
That's entirely up to you. Some folks just get a muffler delete pipe and go with the stock system. I would not recommend getting just a downpipe and saving up as the DP would be too expensive by itself, then you face the same thing with the rest. If you want larger, start saving and get the whole thing in one fell swoop. Best way to go. If it's gonna be a while, I'd straight pipe it.
I don't think you're gonna kill yourself on fumes driving it like it is if you're careful, but after a while it becomes cheesy IMO.
I don't think you're gonna kill yourself on fumes driving it like it is if you're careful, but after a while it becomes cheesy IMO.
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Post Fiend
Joined: Feb 2006
Posts: 11,892
Likes: 2
From: Middle Tennessee
Sure, I did. Just remember that your exhaust is dumping out under the cab. It's not gonna fall off or anything like that. I'm sure there are some folks on this forum who won't approve but I don't believe you'll hurt anything. Like I said though, gets cheesy. Also, check local laws, don't want a ticket for muffler violation or some other exhaust or sound ordinance violation.
Laughing Gas
Joined: Jul 2003
Posts: 1,157
Likes: 1
From: Littleton, Colorado
This may or may not be an issue( mainly because I can't remember where my stock downpipe ended) but watch out for the extra heat on your tranny and tranny lines. No need to weaken the already weakest link.
As for doing a little at a time\and building up tp the 5"... save your $$ up and do it all at the same time you'll be glad you did.
Austin
As for doing a little at a time\and building up tp the 5"... save your $$ up and do it all at the same time you'll be glad you did.
Austin
Senior User
Joined: Jan 2006
Posts: 156
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From: Southeast mi
My 2 cents
I was told this along time ago when I first started driving truck, I dont know if this is urban legend of not...a gasser lets out carbon monoxide, (monoxide posioning) a diesel lets out carbon dioxide, When we breath and take in oxygen our bodies let out carbon dioxide, ethier is not good to breath, but that coarbon dioxide is not that bad to us , the refersal of plants, they take in corbon dioxide and let out oxygen,
So again my 2 cents is that I would'nt worry about the fumes but more on how the valves cool, hot valves then you turn off engine and the cool air rushes in prematurly cooling them, insted of the air rushing into the open exhaust and getting warmed by the travel though a hot pipe. I know we had this possible problem on our motorcycles when the exhaust gasket would leak, some thing about crystalizing valves..the surrounding area does not cool evenly..
Like I said just my 2 cents..maybe someone can help me here with this if need be..
I was told this along time ago when I first started driving truck, I dont know if this is urban legend of not...a gasser lets out carbon monoxide, (monoxide posioning) a diesel lets out carbon dioxide, When we breath and take in oxygen our bodies let out carbon dioxide, ethier is not good to breath, but that coarbon dioxide is not that bad to us , the refersal of plants, they take in corbon dioxide and let out oxygen,
So again my 2 cents is that I would'nt worry about the fumes but more on how the valves cool, hot valves then you turn off engine and the cool air rushes in prematurly cooling them, insted of the air rushing into the open exhaust and getting warmed by the travel though a hot pipe. I know we had this possible problem on our motorcycles when the exhaust gasket would leak, some thing about crystalizing valves..the surrounding area does not cool evenly..
Like I said just my 2 cents..maybe someone can help me here with this if need be..
Senior User
Joined: Nov 2005
Posts: 122
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how hard is it to buy some universal hangers and run some flex pipe out the side of the truck. just until you get the $ saved for your whole system. no worries with gasses entering your cab. me personally i dont care about the gasses but its my passengers that i take into consideration.