V6 (1994-2004) Mustangs Technical discussions on the 3.8L and 3.9L V6 torque monsters

Dual exhaust sootyness

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Old 06-04-2013, 11:24 AM
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Mobiusone stang
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Default Dual exhaust sootyness

Howdy all. Thanks in advance for your help. I recently installed a what I think is a y pipe system dual exhaust with two flowmaster supper 44s. Everything works great except the passenger side exhaust tip is always seems to have an excessive amount of black soot compared to the driver side. Is this normal? Any suggestions as to what is going on? Thanks
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Old 06-04-2013, 11:38 AM
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TomKat
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i'd pass on the flowmasters... v6 dont sound to good with them.
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Old 06-04-2013, 07:40 PM
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Lol kinda late on that tomkat. There ok I guess.
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Old 06-04-2013, 10:37 PM
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Daehawk
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My guess is the exhaust is being directed more that way if not all that way. Why I dont know but both sides should be the same. With one showing soot and other not then theres a flow issue somewhere somehow.
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Old 06-05-2013, 12:30 AM
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That was my only thought daehawk. I mean my car is running fine and it sounds fine just the black soot. Any other ideas guys? Also to tomkat I thank you for your honest opinion and I respect it. But i did ask a tech question not really looking for one. I'm a college student who has liitle to no money and was over the moon when I was about to get dual exhaust. Flowmasters from what I heard were reliable we'll built and cheap. To me they sound great and from what I learned here you gotta do things to make you happy not others.
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Old 06-05-2013, 05:26 AM
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Daehawk
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That's the attitude. Do what you want not others. If you like them that's all that matters. Flowmaster makes great exhausts.

If you're seeing an extreme amount of soot it can mean your engine is running very rich. If you even it out it will reduce the soot. You can also run the lowest octane gas which will help. The 87 I think it is.

This site has info on a way to clean it off/out.

Last edited by Daehawk; 06-05-2013 at 03:51 PM.
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Old 06-05-2013, 06:42 AM
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jthorn9
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This is why it's a good idea to so the mid pipe and go true dual, that way you don't run into these odd ball issues. The soot is likely being caused by the engine running rich due to a faulty sensor or a cat not properly doing its job. To answer your question no the y pipe does a terrible job at even air distribution that's why one side is showing more than the other. Eliminating the y and replacing with an h pipe will improve sound and eliminate these one sided issues.

Last edited by jthorn9; 06-05-2013 at 08:04 PM.
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Old 06-05-2013, 11:10 AM
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Mobiusone stang
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Alright thanks guys. Very helpfull ill prob live with it for a while since money is tight and new wheels and tires are a must now. I have a local muffler guy who does great work for reasonable price. My question is should he be able to jus undo what he did and put the h in place? Also any recommended brands from like am that are on the cheaper side but still a quality product?
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Old 06-05-2013, 12:38 PM
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kzonts
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I think the black soot is usually the result of running RICH, not lean.
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Old 06-05-2013, 03:51 PM
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Daehawk
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Originally Posted by kzonts
I think the black soot is usually the result of running RICH, not lean.
You are correct. No idea why I typed lean. Thanks.

Another site with info on preventing soot.

http://www.howstuffworks.com/how-to-...ars-engine.htm

Last edited by Daehawk; 06-05-2013 at 03:53 PM.
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