Exhaust
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Exhaust
I am installing a new exhaust on my truck and was wondering what anybody thinks about true dual straight pipes. My friend’s truck has them and it sounds really good, currently my truck is being dumped right where the cat back connects after the y pipe. I want a more glass pack sort of sound, right now it just sounds like a chambered muffler, which I don't prefer but it does sound ok. My main question is there any things I should look out for when doing the install, and has anyone done this setup. The only thing I am worried about is the clearance around the pipes and which is the best way to route them. I am not sure if I am going to dump them right before the rear axel or bring them all the way back but either way the front of the exhaust will be the same. I am going to run two separate pipes off of each cat on each manifold and then run the exhaust from there, eliminating the y pipe.
The vehicle is a 2000 Expedition 5.4 4x4.
The vehicle is a 2000 Expedition 5.4 4x4.
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The fuel tank is definately in the way. I remain utterly fascinated by the desire for "true duals" on this site. There is absolutely nothing to gain by doing this except draining you wallet. Oh wait...you get to tell your buddies you have "true duals". That has to be worth a grand out of pocket.
I would say that not running pipes out from under the body on an SUV like the Expy is a very bad idea. Maybe this desire for "true duals" is the result of CO poisoning from "dumping" the exhaust under the body
Just put a glasspack on it, another Y pipe, run duals out the back and call it good. Much cheaper, exact same results.
I would say that not running pipes out from under the body on an SUV like the Expy is a very bad idea. Maybe this desire for "true duals" is the result of CO poisoning from "dumping" the exhaust under the body
Just put a glasspack on it, another Y pipe, run duals out the back and call it good. Much cheaper, exact same results.
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Now although I agree with Big Greenie.
I dont exactly agree with his delivery.
these rigs are big heavy boats and you want to maximize torque, and to do this it would be more beneficial to get high flow cats, Y into a larger single pipe, and adding a good high flow muffler like a flowmaster.
Since more than likely you will use it mostly on the street, I think a 2.5 inch or 3 inch single would be more than enough flow for that motor.
Obviously its up to you, and your pocket book, but upgrading the exhaust is not as beneficial unless you include other mods to take advantage of the increased flow.
Steve
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Thanks for the input, I am now going to just run a single outlet exhaust in the factory spot, As Big Greenie said it wouldn't be worth it, I have to agree I just thought at first that true duals would be a good idea but it isn't worth the time or money.
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I would bet that if you went with long tube headers, an X-pipe and duals you could see some benefits. There isn't really room for this on these trucks and the cost to see a gain would be waaaaay out of whack.
The tube size back to the Y is actually pretty generous on my 5.4's. The cork is the factory muffler. Just remove that cork and replace it with your noisemaker of choice. I love the sound of my Magnaflow muffler.
The tube size back to the Y is actually pretty generous on my 5.4's. The cork is the factory muffler. Just remove that cork and replace it with your noisemaker of choice. I love the sound of my Magnaflow muffler.
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I have a couple of exhausting questions for the experts out there:
- Can a replacement tailpipe for a 4.6L 2002 Expy (no resonator) be used to replace the tailpipe on a 5.4L version (w/resonator)?
- If so, would there be any advantage, other than lower cost if the OEM item is damaged and needs to be replaced? i.e., will eliminating the resonator reduce back pressure, provide a "healthier" sound, or any other benefit besides improved visual appearance?
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From: Acworth Ga
I am not an expert however this may answer your question about the resonator. The exhaust pipes in automobile exhaust systems are designed with acoustic resonators that work with the muffler to reduce noise, by making sound waves cancel each other out. Manufacturers use the resonator to enhance the sound. In tuned exhaust systems designed for performance the resonance of the exhaust pipes is also used to 'pull' the combustion products out of the combustion chamber quicker. Personally if i could i would leave the resonator and replace the muffler with an aftermarket one that has the sound your looking for. Resonators and cats have little resistance now a days. Fords have some of the most restrictive mufflers.
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