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4.0L OHV & SOHC V6 Tech General discussion of 4.0L OHV and SOHC V6 Ford Ranger engines.

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Old 07-31-2009
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Exhaust Exploring

ok so my dad just had exhaust done on his 4.0 mustang and they cut at the y pipe and then ran two si/so flowmaster original...so my question is do our trucks need both pipes to run into the single cat or could i chop it and put that cat on just one pipe and then run si/so's? sorry if its confusing, let me know and i'll try and get pics if you need
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Old 07-31-2009
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I`m confused. JK. The way I did my exhaust the first time was to remove the big two into one (last) cat. Run a 2.25" to 3" Y-pipe to a flow si/do. Not sure if you`ll be able to run a single pipe into the big 2-in-1 cat. The inlet side is oval shaped to accept the two pipes. But I guess anythings possible...
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Old 07-31-2009
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would it mess anything up performance wise and would i b better off buying a new cat for that section if i decided to go that route?
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Old 07-31-2009
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what if i went to the JY and got two of the cats that are before the last one and eliminated the big one?
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Old 08-01-2009
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How many cats do you have? My truck only had three... one on each downpipe and the big 2-into-1. I just removed the big one since there was no sensor after it. No cels and a little deeper, louder sound.
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Old 08-01-2009
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Are you trying to run a true dual setup? If so, sorry to tell you, but your gas tank will prevent that.
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Old 08-01-2009
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well would it sound better if i got rid of the big 2 into 1 cat and then got a di/do flo 40?
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Old 08-11-2009
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anyone?
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Old 08-11-2009
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This thread is funny.
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Old 08-11-2009
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lol im so lost but I think I see what you are getting at. just take out all the cats and build a custom back from the exhaust manifolds. You dont need cats (unless the legalityl deal) I have no cats and have no CEL. You can run true dual but the wont be even close to equal length. I dont know but I think I may have answerd your question maybe
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