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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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  #26  
Old 05-01-2009
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nice man! sounds clip is needed, haha
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  #27  
Old 05-02-2009
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i was thinking of doing the same thing cause i have no muffler right know and need one for the dunes meet so i might be putting a magnaflow on there soon.. i want it to be loud still i love loud
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  #28  
Old 05-02-2009
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i do too, this thing isnt terrible loud at lower rpm's, but when you open 'er up it screams pretty loud!
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  #29  
Old 05-02-2009
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Looks good man. Find someone to do a rear cat delete. Take out that last cat in the system and replace it with a 2.5in tube with a dog leg bend in it. It really opens up the throttle response and I **** you not, I'm getting 23-24mpg on the highway with having that last cat done. Better flow (also helps having a manual tranny with all synthetic fluids and a recent oil change, but still) and it really opened the sound up on my exhaust system.

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You can see where the cat used to be with that new shiny tubing! lol
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  #30  
Old 05-02-2009
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i dont think i have a cat in the same place you did... lol
at least i dont think so
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  #31  
Old 05-02-2009
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Yeah you should have 4... Well depending on where state emissions laws... 2 on the y-pipe coming off each side of the manifold, and 2 after the y-pipe.

I seriously gained a lot from just that cat delete. I was surprised... Best $42 mod I think for power, mileage and response you can do.
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  #32  
Old 05-02-2009
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so you just cut it out there's not a 02 plug in it???
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  #33  
Old 05-02-2009
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I'll go take a pic of it right now and show you. After the last big cat I cut it off and welded in a straight pipe back to the muffler. In the same general area, I welded in a o2 sensor bung ($7 for the bung and $35 for 4ft of 2.5in tubing with the bend, since no shop will cut out cats, state prohibited) after drilling out the hole for the sensor to fit in. Looks OEM and works WAY better. Hang on, it's pouring outside gimmie a min.
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  #34  
Old 05-02-2009
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Ok so here's the big cat i'm talking about... 3rd cat in the system (2 pre-cats before this one on the y-pipe):

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Here's where the o2 bung was put in to keep CEL's from coming on (re-used the factory hangar):

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And here's what it looks like with rear cat delete in place. 2.5in tubing 1 piece from the big cat back to the muff:

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I highly recommend this for anyone, especially with higher mileage motors. Helps to open it up quite a bit. More so than I thought it was going to. My truck used to be quite quiet. Had 2 different types of muffs on it and neither one was "loud". The cats are HIGHLY restrictive, and with this mod in place, it proves it.

EDIT: Here's the cat I'm talking about that I took out. Thanks for the pic Malydeen:

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You can see where it's about 2.5in off the cat and where it reduces down to about 2in at that collector. When you do this mod you take out the cat and run it 2.5in all the way back increasing flow by a good 25% just in tubing diameters.
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