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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 02-06-2007
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Straigt Pipe

The exhaust set up I am running now is no muffler, single pipe splitting into dual at the rear. A few people in recent exhaust threads said that if running this set up your gas mileage is going to suffer is that true? I do about half highway and half city. If I get 16mpg I am lucky.

A little info on my truck-
-2002 XLT 4.0 SOHC
-3in BL
-285/75/16 tires
-K&N air filter
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Old 02-06-2007
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with the lift and 285's as long as you have an auto I don't think 16 is that bad for gas mileage. I would take that.
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Old 02-06-2007
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I forgot to mention that I have a 5 speed. I get 16 if I am LUCKY.
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Old 02-06-2007
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you sound on par to me.. im gettin rdy to redo mine with strait pipe into dual camaro 8"x2" tips
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Old 02-06-2007
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I haven't noticed any negative mileage, if there is it is very little.
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Old 02-06-2007
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So the consensus would be that I am ok with my exhaust. At least I will save a little money.
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Old 02-06-2007
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I have not lost any of my mileage..

i have 32's tires tho

With the bama tuner i have. i gained low end power.

I have a 5-speed, i can take off in first alot easyer how.

Last edited by Bigwill41; 02-11-2007 at 04:42 PM.
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Old 02-06-2007
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Well I just did this modification about a month ago and I think I lost about 1 mpg. Think I'm going to put a muffler on to correct that issue. I myself dumped it before the right rear with my Z28 Camaro tip.
Here's my original thread
Here's the video I made: Straight pipe Video
Also a pic:
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Old 02-06-2007
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You will loose some low end power. You prally lost alot of back pressure. Hows it sound?
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Old 02-06-2007
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It sounds good. I am just worried about performance and gas mileage.
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Old 02-11-2007
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Lord of War, I am now running the same set-up you have. I lost alittle low-end grunt and 1-2 mpg. Plus it's kinda loud at freeway speeds in the cab.

I will be installing a new Magnaflow muffler soon. It looks just like a glass pack, but it's not. I hope it tones it down alittle and I get my mileage back. If not the stock system is going back on!
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Old 02-11-2007
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if you're worried about performance and gas mileage then the stock exhaust is probably best plus its free lol. i dont think there is an exhaust low enough price wise, to what you want out of it. only muffler i can think of that sounds decent and saves gas mileage and good performance is Borla, or Magnaflow, but again those mufflers can be pricey especially the borla.
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Old 02-21-2007
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For those of you who have straight pipes a few questions?

1. Did you put on an X-PIPE? It equalizes the exhaust soooo much more.
2. Did you have any problems with your computer not sensing the cleaner exhaust becuase of your sensor?

Thanks - Post quickly Please
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Old 02-22-2007
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Quote:
Originally Posted by Wingmandan
Did you have any problems with your computer not sensing the cleaner exhaust becuase of your sensor?
With the cats removed, you can expect a Check Engine light, code P0420. If you eliminate the rear O2 sensor, you will get a CEL and code for that. Obviously, it wouldn't pass smog. All this for little or no performance gain.
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Old 02-25-2007
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Quote:
Originally Posted by rwenzing
With the cats removed, you can expect a Check Engine light, code P0420. If you eliminate the rear O2 sensor, you will get a CEL and code for that. Obviously, it wouldn't pass smog. All this for little or no performance gain.
I asked someone about removing my last cat thats two in/one out and having a dual in dual out muffler installed, and if I had a tune with the last o2 senser shut off, I would not get a code.
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