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Cold air intake/ fuel consumption

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Old 10-23-2016, 03:06 AM
  #1  
Erny Hernandez
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Default Cold air intake/ fuel consumption

OK this is very strange! 7 years ago I bought and 07 Mustang v6, one of the first mods I did was install a k&N cold air intake that doesn't require a tune which I've had ever since keeping it clean and every time I went for my maintenance for life, and I never paid attention until late recently, my car was suffering from poor acceleration and very bad fuel consumption I would get if I was lucky 175 miles a full tank city 190 if did highway, which seemed odd to me I tried checking everything so find out why was I losing acceleration and getting very bad gas milage I did ful fuel injection cleaning service and still no luck 2 weeks ago I was cleaning out the garage and I found my stock intake, so I was like what the hell I'll let me try test a theory, so I went over to ford and picked up a filter and went home and install my stock intake back on, and after a few days I gained back my acceleration, my car feel faster, and now I'm getting 240 miles on a full tank of gas, what the hell I am so confused I thought It should be the other way around. I have no idea why? could someone help me out ? I find it strange
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Old 10-25-2016, 06:09 AM
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jz78817
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Probably because your "no tune required" CAI actually needed a tune. Nevermind that it was a waste of money on a poor-breathing engine like the 4.0 anyway.
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Old 10-25-2016, 07:06 AM
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TRamsdell
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air intake on a 4.0? may as well buy a turbonator
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Old 10-27-2016, 11:25 AM
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66and06stangs
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"A poor breathing engine like the 4.0"? Never heard that before, but agree, it probably needed a tune. BTW, I get just over 300 miles on a tank consistently.
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Old 10-29-2016, 03:01 AM
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jz78817
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Originally Posted by 66and06stangs View Post
"A poor breathing engine like the 4.0"? Never heard that before, but agree, it probably needed a tune. BTW, I get just over 300 miles on a tank consistently.
the 4.0 is a truck engine, originally meant for the Explorer and Ranger. It was dropped into the Mustang because they had no other V6 to use at the time. it's a low-revving, wheezy boat anchor.
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Old 10-30-2016, 08:31 AM
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^^^^^true story
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Old 11-06-2016, 01:08 PM
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Well what a bunch of biased v8 owners!
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Old 11-07-2016, 12:45 PM
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Originally Posted by zworld View Post
Well what a bunch of biased v8 owners!
BASE ENGINE SIZE 4.0 L BASE ENGINE TYPE Gas
CAM TYPE Single overhead cam (SOHC) CYLINDERS V6
HORSEPOWER 210 hp @ 5300 rpm TORQUE 240 ft-lbs. @ 3500 rpm
TURNING CIRCLE 33.4 ft.

4.6L SOHC V-8 = 300 hp @ 5750 RPM & 320 lb-ft @ 4500 RPM.

not that great. not bias, facts.
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Old 11-08-2016, 02:27 AM
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the v6 of today makes the same hp and tq as your 03 v8 so i guess todays v6 owners should throw your turd v8 under the bus just the same,, not bias just facts....


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Old 11-08-2016, 07:28 AM
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66and06stangs
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Really... if you don't have anything good to say, why not hang out with the other cool kids in the V8 forum. Personally, my nicely tuned v6 suits me just fine.
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