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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 11-19-2011
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Icon5 SOHC Cat question??

First off, yes I'm new to the site but not to Rangers :) I just had a question about the cats on my 4.0I. A little backround on my trucks existing exhaust, it has cat back flowmaster single in dual out muffler. Seeming that it has 4 cats, I was thinking about removing the BACK TWO cats ONLY. Replace that first cat with a Y-Pipe and run it to the existing pipe with a sensor before the last cat. After that remove the last cat with a straight pipe and straight to my muffler. I've seen a couple posts but they were about removing all of the cats.. I was wondering the advantages and disadvantages about doing this..

Thanks, Thomas.
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Old 11-19-2011
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I found a couple more posts on this. A few guys have done this and with success. I believe I will be doing this mod sometime in the very near future.
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Old 11-23-2011
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Exactly what I have, works great.
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Old 11-23-2011
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Exactly what I have, works great.
Your exhaust get louder? :D
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Old 11-24-2011
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Your exhaust get louder? :D
Not really - I'm guessing all the sound suppression is happening in the muffler...
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Old 11-24-2011
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Not really - I'm guessing all the sound suppression is happening in the muffler...
What kind of muffler do you have installed?
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