Driving With Open Headers Concern..
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Joined: Jun 2006
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From: Ottawa, Ontario
Originally Posted by FordF350Baby
See thats what i dont know right now. Because as it currently is set up, I dont have any o2 sensors in my true dual exhaust,
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From: Pa
Originally Posted by Conanski
You definitely got an O2 sensor in the system somewhere, cause if you don't you'll be getting 8-10mpg all the time. It's probably tapped into the back/bottom of the passenger side exhaust manifold, it'll be hard to see unless you're looking for it, probably only visible from underneath the truck.
You got to have O2 sensors somewhere or the truck just won't run right, or up to its potential.
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Hmm yeah I would hope I would have some when they put the true dual in. Yeah the trucks gets really bad gas mileage and everything is tuned up, new plugs, wires, cap, filter, free flowing exhaust, so its the possibilty, but i think the truck just eats its 6-10mpg anyhow cuz of its weight and gearing. But WTF, I brought my truck to the guy who said he would do it, and now he is trying to talk me out of not installing headers, he said it wont give me any extra torque or horsepower and its not worth the hastle, and that I should look into getting a chip, or advancing my timing, but would not stop insisting that i dont put the headers in, so I now i dont want him to try and do it because hes going into the job negatively, which you cant have when a job like this can get very expensive quickly.
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From: Pa
Originally Posted by FordF350Baby
Hmm yeah I would hope I would have some when they put the true dual in. Yeah the trucks gets really bad gas mileage and everything is tuned up, new plugs, wires, cap, filter, free flowing exhaust, so its the possibilty, but i think the truck just eats its 6-10mpg anyhow cuz of its weight and gearing. But WTF, I brought my truck to the guy who said he would do it, and now he is trying to talk me out of not installing headers, he said it wont give me any extra torque or horsepower and its not worth the hastle, and that I should look into getting a chip, or advancing my timing, but would not stop insisting that i dont put the headers in, so I now i dont want him to try and do it because hes going into the job negatively, which you cant have when a job like this can get very expensive quickly.
Your truck would definatly benefit from some custom tuning, but the headers are a step in the right direction IMO.
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Joined: Apr 2006
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From: Saskatoon Saskatchewan
Originally Posted by kens64
Its the truth. Its really not possible to burn the valves with open headers. As soon as the exhaust gasses leave the exhaust port and go into some sort of pipe or manifold, the valves dont care what happens to it or where it goes.
I used to run cutouts right off the manifolds all the time back in high school. They were open more often than closed.
I used to run cutouts right off the manifolds all the time back in high school. They were open more often than closed.
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Originally Posted by dkf
The headers really helped on my 6.8l. The 460 should respond even better to the headers. Banks has had sytems for the 460 for years and they produce power. The local garage I got my headers put on at were hesitant to put them on. Some shops just want to do basic stuff like brakes, inspection, water pumps and etc. I think dealing with headers pulls them out of there comfort zone. Some people are hesitant to try anything new or do something they have never done before.
Your truck would definatly benefit from some custom tuning, but the headers are a step in the right direction IMO.
Your truck would definatly benefit from some custom tuning, but the headers are a step in the right direction IMO.
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From: Rio Rancho USA
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From: Louisville,Ky.
It will not burn valves to run open headers. It will burn valves if you run nothing at the heads or with a decent sixed exhaust leak at the head. This occurs when you get the rpms up, then let off of the throttle, the cold air being sucked back into the exhaust port hits the hot exhaust valve and cracks it.
Go to any drag strip and you will find that most of the cars run open headers.
It will not be ungodly lound idling around, but will get pretty noisy when you gas it hard. I've driven on the street several times with open headers.
Go to any drag strip and you will find that most of the cars run open headers.
It will not be ungodly lound idling around, but will get pretty noisy when you gas it hard. I've driven on the street several times with open headers.
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Originally Posted by LxMan1
It will not burn valves to run open headers. It will burn valves if you run nothing at the heads or with a decent sixed exhaust leak at the head. This occurs when you get the rpms up, then let off of the throttle, the cold air being sucked back into the exhaust port hits the hot exhaust valve and cracks it.
Go to any drag strip and you will find that most of the cars run open headers.
It will not be ungodly lound idling around, but will get pretty noisy when you gas it hard. I've driven on the street several times with open headers.
Go to any drag strip and you will find that most of the cars run open headers.
It will not be ungodly lound idling around, but will get pretty noisy when you gas it hard. I've driven on the street several times with open headers.
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Joined: Mar 2007
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From: Pa
Originally Posted by kens64
If the engine isnt tuned for 93 octane you are wasting your money.
You can get a lot of benefit from a custom tune even if running 87. The air/fuel ratio is lean from the factory. Adding headers, exhaust, intake and etc only makes it worse. True you will get the max power out of premium gas but there is quite a bit to be had on regular as well. Not to mention a custom tune will make the tranny shift firmer and better overall.
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Well I think what Kens64 was saying was that running 93 octane on a untuned vehicle is a waste of money, which to a certain extent is true... I dont know if you misunderstood him. I said earlier that I run 93 octane fuel, because IMO its cleaner, and my computer has learned that i use it and I believe that my engine runs cleaner and stronger because it has tought itself I use only 93 octane. On the other hand, the benifits are minimal if the computer isnt fully tuned to utilize the slower burn of higher octane fuel. So I dont mind spending the extra money on the higher grade fuel because I will be getting a chip soon, so it wont hurt to already have the engine use to running high octane fuel, but I think its okay because the truck is fairly modded, and its out of habbit growing up to use the good gas, because I have had to run lower octane in rare siutations and the engine pings, not just in my truck but the other vehicles I have driven, so it does make a differnce.
Last edited by FordF350Baby; Jan 24, 2008 at 10:19 AM.
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Extending engine mounts??!
yeah I cant wait. The truck has been at this shop all day today getting the headers put in, and I get a call around 1:30 saying that there going to need to custom extend some motor mount brackets so the headers will fit, and said they would need an extra $300 to do the brackets on top of the $300 to install the headers. Uugggghhhh, I dont have that kind of money, but howcome nothing can ever go smoothly? Why would doug Thorley not provide a kit if this was going to be a problem?
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From: Rio Rancho USA
Originally Posted by dkf
Not true.
You can get a lot of benefit from a custom tune even if running 87. The air/fuel ratio is lean from the factory. Adding headers, exhaust, intake and etc only makes it worse. True you will get the max power out of premium gas but there is quite a bit to be had on regular as well. Not to mention a custom tune will make the tranny shift firmer and better overall.
You can get a lot of benefit from a custom tune even if running 87. The air/fuel ratio is lean from the factory. Adding headers, exhaust, intake and etc only makes it worse. True you will get the max power out of premium gas but there is quite a bit to be had on regular as well. Not to mention a custom tune will make the tranny shift firmer and better overall.
FordF350Baby- If you want to use that higher octane gas, try to play with the ignition advance to mabye get a few more ponies and use the more expensive fuel.