Is it possible?
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Is it possible?
Is it possible to run true duals on a 1995 F-250 with a 351? I realize that on the driver's side it is impossible with the gas tank in the way. Is it possible to have both pipes run on the passengers side and have a flowmaster single chamber on each? If possible, can I leave the cats off without the chech engine light coming on? Any other advice on this tpoic would be greatly appreicated.
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From: shepherd
that is how they run duals with a frame rail mounted fuel tank.if the o2 sensors are before the cats then you can delete them without the light coming on. don't use 1 chambers, they sound crappy, i have heard.
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F100 guy my O2 sensor is by the flange of the catalytic converter. So if delete the cat or gut it so to speak the check engine light will not come on? From what I understand if your engine runs well enough it will pass emissions anyways. The 351 I have runs very well. Is there anything I can do to make the exhaust louder? Cam, intake manifold, headers, etc??? thanks
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From: Fairbanks, Alaska
How many o2 sensors do you have? I have a 95 Bronco 351W, same engine as you. The only o2 sensor i have is right at the y-pipe. So it is no problem for me to get rid of my cats. I think since you a 95 also, same engine, i think you have the same set up as me. If so, you are fine to get rid of everything after the y-pipe back. Or if you want true duals, make all new exhaust from manifolds back. Thats what i will be doing soon, once i get my crap and my garage gets off of its 2 week break
And no, a cam isnt going to make your engine louder....i dont think it will be easy finding a good performance cam for a 95 351 anyways. If you want loud exhaust, its all the mufflers. 40 series flowmasters will do the trick. Personally im going with 40 delta's cuz i dont think i want all that cab noise for my daily driver. BTW if your going to spend the money for dual exhuast, you might as well go with some good headers to keep everything flowing good, it just tops everything off. I wish i had my exhaust done and could show you my set up.
RIGHT NOW, ITS ALL IN MY HEAD....DRIVING ME NUTS, I want it installed
And no, a cam isnt going to make your engine louder....i dont think it will be easy finding a good performance cam for a 95 351 anyways. If you want loud exhaust, its all the mufflers. 40 series flowmasters will do the trick. Personally im going with 40 delta's cuz i dont think i want all that cab noise for my daily driver. BTW if your going to spend the money for dual exhuast, you might as well go with some good headers to keep everything flowing good, it just tops everything off. I wish i had my exhaust done and could show you my set up.
RIGHT NOW, ITS ALL IN MY HEAD....DRIVING ME NUTS, I want it installed
Last edited by snowmobilerfreak; Jul 26, 2004 at 10:40 AM.
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Snowmobile Freak- You do have the same enigine as me, on the other hand I have dual exhaust coming the entire way to the cat. The pipes dump into one out of this world huge catalytic converter the I have my 40 series original. I love the tone sounds fabulous but the cat robs it of that true rumble. I want to do something to get that rumble and refuse to pay money to get a hi-flow cat when I could hollow it out for free. Emissions is a tought thing too. I believe next Summer when I have some more money I will be getting headers, an X pipe, and get 2 cats hack them in half and just weld them over the existing pipe but not actually function. Purchase 2 new flowmaster 40 single chambers mount them sideways and have a nice tip coming out behind each tire. Just the look that I like. You are definitely right about the X pipe. My buddy has a 2001 Mustang with a 4.6 he has an X-pipe and it sounds phenomenal. I will be able to get all of this done at a fair price only I do not know if the garage that I usually get to do my work bends their pipe without kinks.
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From: shepherd
Originally Posted by snowmobilerfreak
And no, a cam isnt going to make your engine louder....i dont think it will be easy finding a good performance cam for a 95 351 anyways.
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Thanks alot F-100 guy. Funds aren't at a peak now so the exahust will have to be enough for now. headers next year and some single chanmber 40 series. This had better be worth the money I am putting into it.
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From: Fairbanks, Alaska
You said you have dual exhaust coming from the exhaust manifolds all the way to the cats. Well from the manifold to the cat is only like 2 feet LOL, and that piece that dumps into one is the y-pipe. Every vehicle has that, even mine
So you really dont have dual exhaust. But tell me how many o2 sensors do you have then I can further assist you on wether or not making true duals will be a problem. If it is just like mine then you only have 1 o2 sensor and that is right at the y-pipe which is no problem at all just as long as you weld in a o2 bung reusing your o2 sensor so you have no computer problems. And hacking 2 cats in half is a BIG waste of time. Just pound the crap that is inside of them out and run a straight piece of exhaust through it, how is a inspector going to be a to tell that it is a hollowed cat? It will look just like it would if you had pipe running in one side and then exiting out the other.
And then you dont have cats that have weld marks all the way around it ROTFL, i think then it would be obvious.
You have an instant messenger service like MSN or anything?
So you really dont have dual exhaust. But tell me how many o2 sensors do you have then I can further assist you on wether or not making true duals will be a problem. If it is just like mine then you only have 1 o2 sensor and that is right at the y-pipe which is no problem at all just as long as you weld in a o2 bung reusing your o2 sensor so you have no computer problems. And hacking 2 cats in half is a BIG waste of time. Just pound the crap that is inside of them out and run a straight piece of exhaust through it, how is a inspector going to be a to tell that it is a hollowed cat? It will look just like it would if you had pipe running in one side and then exiting out the other. And then you dont have cats that have weld marks all the way around it ROTFL, i think then it would be obvious. You have an instant messenger service like MSN or anything?
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I thought you meant that you pipes coming from your manifolds came into one before the catalytic converter. Two pipes go into my cat. I only have O2 sensor. I have AOL instant messenger. My name is athleticacougar. Could you explain what to do with the O2 sensor more thoroughly for the not so mechanically advanced as yourself?
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From: shepherd
both pipes go into the cat, then one comes out of the cats and into a muffler with dual outlets. that is not a tru dual exhaust. to have true duals, you have to have 2 mufflers. anyway about the o2 sensor. if the o2 sensor is before the cat, then it is ok to cut off the cat. but if the 02 sensor is behind the cat, you are screwed unless you buy one of those MIL simulators that are made for mustang with Off road mid pipes