Bigdaddy4430
Member
Is this a project i can do myself?Do i have to do some welding on the pipes or can i just use clamps?Any tips would be greatly appreciated.
- Thread starter Bigdaddy4430
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cole in mo.
Well-known Member
If its a gas and you go true duels you'll need another cat converter to pass inspection, I just went with a performance muffler after the converter, and ran twin tail pipes, sounds good, but not true duel sound.
Bigdaddy4430
Member
Didnt think i had to bend pipe.Its the 5.2
buickanddeere
Well-known Member
Trying to do what? A pair of stacks up through the bed of the track behind th cab?
As previously stated. Messing with pipe work down stream of the last sensor(s) is practical.
HP gains are going to be minimal going to duals.
I hope you are not one of those narcistic noisy exhaust system twits ?
As previously stated. Messing with pipe work down stream of the last sensor(s) is practical.
HP gains are going to be minimal going to duals.
I hope you are not one of those narcistic noisy exhaust system twits ?
Dave in GA
Member
About 8 years ago when I was driving old iron, my daily drivers were a '63 Buick Riviera and a '69 Buick Wildcat convertible. They were big blocks with dual exhaust. They both sounded sweet. They're gone now, but I still have a '71 IH pickup and a '65 IH 1-ton 4x4, both with V8s and dual exhaust. No cat converters to split the exhaust and mellow the voice on any of these vehicles.
You will probably end up breaking the studs off on the manifold trying to remove the Y pipe! Your going to need a pipe bender,, hangers ect, I have 2 trucks with true duals, I took them both to have them done, I can't remember what I did on the sb 400 with open headers to get it to the shop, musta cobbed something on there to keep me from getting a ticket!
Nebraska Cowman
Well-known Member
I had my O-4 Dodge done when it was new. Love the sound. But after nine years it needs done again. Shop says about $300. There is no way I'd try to do it myself.
Your Y pipe is built onto the front of the cat. converter if it is like my 96 with a 360 gas.
You will have to find a dual converter set up and hook up 4 o2 sensors somehow too.
My converter "lost" it's rattling guts and the gas mileage went down and every so many months I'd have to unhook the battery to turn the check engine light out.Running without a converter for sure did not make it run better. It wasn't any worse just mileage didn't seem to be as good.
You will have to find a dual converter set up and hook up 4 o2 sensors somehow too.
My converter "lost" it's rattling guts and the gas mileage went down and every so many months I'd have to unhook the battery to turn the check engine light out.Running without a converter for sure did not make it run better. It wasn't any worse just mileage didn't seem to be as good.
Chris in SK
Member
I knocked the cat out of my 5.2. Taking the last O2 sensor out of the exhaust flow by using a couple of small engine spark plug anti-foul spacers has kept the check engine light off for a couple of years now. I really didn't notice any change in fuel mileage.
If it's an on road truck you may have to deal with emission requirements depending on the state and county. If you have to be emission certified, true dual exhaust would probably require two downstream O2 sensors which didn't come stock on your truck. In that case the PCM would not be able to process two downstream O2 sensors because it's not set up for that. So before you dive in, I would contact the motor vehicle inspection station and ask them. Here in Missouri some counties require the MIL light be off and a number of monitors armed to pass. Other counties don't require that test. Off road doesn't really matter as far as I know. Gerard
The downstream sensor just tells the computer if the cat is working. The upstream is the one it uses to set the fuel mix.
I think the upstream sensor only reads one cylinder bank anyhow. If one wanted it to read both and to run a dual exhaust the thing to do would be to put in an X pipe and put the upstream sensor in it.
A dual exhaust isn't going to make much difference with the stock manifolds, other than noise.
I think the upstream sensor only reads one cylinder bank anyhow. If one wanted it to read both and to run a dual exhaust the thing to do would be to put in an X pipe and put the upstream sensor in it.
A dual exhaust isn't going to make much difference with the stock manifolds, other than noise.
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