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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 07-18-2010
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K&N Intake

Is a K&N intake worth it? or is the basic K&N drop in just fine. Whats the diffrence besides price between the plastic and Polished Aluminum one they offer?

Thanks
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Old 07-18-2010
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No, it's not worth it. I would just go with a quality drop-in. And, if you do go with the complete intake get the plastic tube.
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Old 07-19-2010
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I had a noticeable gain and large increase in sound in my 2007 3.0 sport but that was it. I did the airbox mod on my 4.0 with a stock filter, and noticed a difference with that.

However, i noticed zero difference from going from the airbox modded setup to a K&N, only a slight difference in sound..and all it is is a suckign sound lol

soooo IMO definately NOT worth the $300+ i paid for it.. just do the airbox mod with a K&N drop in filter and i bet you it would do the same as a ripoff intake.
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Old 07-19-2010
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tubing is tubing get a ebay kit and buy a filter if u want a cai and save the stock come smog time, wont make you any power so why pay that much for sound
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Old 07-25-2010
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I ended up doing the airbox mod with a k&n drop in. i beat my friends ranger same truck
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Old 08-03-2010
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i mean i know street racing is not liked here and its not really racing but my truck is considerably faster than it was when it was stock. A lot of the guys here have made it their goal to make their truck faster than mine. But I have the CAI combined with other parts too. I have the CAI with headers, programmer and exhaust. But like they are saying I really didnt notice a huge difference except for the sound.
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Old 08-03-2010
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I found my truck to be slightly more responsive with the K&N. Sounds is the most noticeable but being very educated in fluid mechanics, I can say that mathematically the CAI is far better than stock. It allows air to flow much smoother, faster and when the enine needs moer air it gets it faster than the stock tube. However, unless you are adding other parts such as Dakota did with headers, and exhaust there will be less of a noticeable difference. Also changing the cam would show a larger improvement.

Basically, the K&N (for what it is designed to do) is a great add-on performance part, but will not see its full potential as a stand alone performance mod.
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Old 08-05-2010
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id say the K&N is worth every penny IMO
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Old 08-05-2010
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I would say, if your starting and ending your modding with an intake, just pull your intake silencer and put in a box filter. you will get the sound and maybe a horse or so. but nothing you are going to notice like night and day. if you plan on doing an exhaust and later a tune, go with the full intake and get the most out of your bolt-on's. this way your programmer will go the full distance, especially if its a custom tune.
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Old 08-05-2010
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I think the intake will shine with header back exhaust tuner and cams
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Old 08-07-2010
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one works with the other, an intake doesnt really shine unless you have a decent exhaust. go with a chip as well maybe some headers and gut the cat. screamin demon with a good set of plugs and wires. you dont have to run motorcraft at all like some people say. that right there is a big load of sh^t. that right there alone with make a noticable difference. and whatever you do dont keep the stock air box, modding the air box is a fail (IMO of course.)
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Old 08-09-2010
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I have an Airraid Quick Fit in mine. I have also done the airbox mod too. Air intake is crazy now and I like it. Here's another thing with a K&N you never have to buy another filter again if you clean it properly and regularly. That's a plus.
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Old 08-09-2010
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Quote:
Originally Posted by delucas View Post
...but being very educated in fluid mechanics, I can say that mathematically the CAI is far better than stock....
you might understand fluid dynamics, but you don't understand cylinder head flow.
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