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Old 07-03-2011, 08:48 AM   #1
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question about air intake

AFE offers three options for the JK air intake system:

1) Replace the stock air intake system with a performance air filter and keep the same closed air box and tube

2) Replace the tube and close air box with a tube and performance air intake without the air box (air filter is uncovered)

3) Replace the stock air intake with a performance air intake which has a closed air box

Which option do you think provides the best performance? I was told that replacing just the stock filter with a performance filter (option 1) will provide the same results as option 3 at a significant lower cost. Filter is around $70 and option 3 goes over $300.

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Old 07-03-2011, 09:03 AM   #2
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The are literally hundreds of posts on this topic. IMO te best option is to do none of those unless you like to spend money on a placebo effect. Some of the options, such as a filter that allows more particles into your engine, can be detrimental. Open filters can also lead to water ingestion which could hydrolock your engine. None of them are CAI. Despite what they say, they are still injesting the same air from under your hood.

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Old 07-03-2011, 09:11 AM   #3
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I agree with Daggo66. I bought a K&N for my F150 supercrew, costed ~ 250 shipped. It made a bunch of noise was all the gain I got from it. I read about the oil/dirt mixture getting to the throttle body, so I choose to check it. Low and behold, grit was able to pass the filter and ended up on the throttle plate/bore on my 5.4L triton V8.

I would not do 2 for the reason I experienced with my F150, and number 3 option seems to be more money without any noticable gains except noise, again, from my experience on a Triton 5.4L V8. If anything, if money is burning a hole in your pocket try number 1 option, I personally would not go any further than that. That is my perspective of it, and good luck to you which ever route you go.
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Old 07-03-2011, 06:33 PM   #4
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Quote:
Originally Posted by daggo66 View Post
The are literally hundreds of posts on this topic. IMO te best option is to do none of those unless you like to spend money on a placebo effect. Some of the options, such as a filter that allows more particles into your engine, can be detrimental. Open filters can also lead to water ingestion which could hydrolock your engine. None of them are CAI. Despite what they say, they are still injesting the same air from under your hood.

Thanks Daggo
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Old 07-03-2011, 06:36 PM   #5
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Quote:
Originally Posted by TxF150 View Post
I agree with Daggo66. I bought a K&N for my F150 supercrew, costed ~ 250 shipped. It made a bunch of noise was all the gain I got from it. I read about the oil/dirt mixture getting to the throttle body, so I choose to check it. Low and behold, grit was able to pass the filter and ended up on the throttle plate/bore on my 5.4L triton V8.

I would not do 2 for the reason I experienced with my F150, and number 3 option seems to be more money without any noticable gains except noise, again, from my experience on a Triton 5.4L V8. If anything, if money is burning a hole in your pocket try number 1 option, I personally would not go any further than that. That is my perspective of it, and good luck to you which ever route you go.
Then I go with option 1, cause' at least it makes a bit of more noise and I like the sound of the engine. I'm planning on getting a better exhaust and maybe headers later on.

The are two filters for option 1, one with oil and one dry, I'll be getting the dry one as a friend told me about an experience like your's before.
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