BEST air intake - Ford Powerstroke Diesel Forum

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post #1 of 36 Old 09-09-2013, 06:53 AM Thread Starter
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BEST air intake

I have a 01 excursion 7.3 , im looking into doin a few things to it , I also have a 05 6.0 that I know is picky about certain mods ....my question is , for my 7.3 , what are the best air intakes I can get for a decent price ? are the 7.3s picky about mods the way the 6.0s are ? any other relatively cheap mods I can do ? I plan on doing a 4 inch straight pipe turbo back exaust as well
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post #2 of 36 Old 09-09-2013, 10:24 AM
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There will be no definitive answer to your question. Personal preference.


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post #3 of 36 Old 09-09-2013, 10:31 AM
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I got rid of the K&N intake I had and went with the 6637. The truck actually seems happier but of course, I have no way to prove it. Just seems to run better.

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post #4 of 36 Old 09-09-2013, 01:54 PM Thread Starter
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Whats 6637 ?
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post #5 of 36 Old 09-09-2013, 02:02 PM
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It's the part number for the big air filter from Napa

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post #6 of 36 Old 09-10-2013, 08:54 AM
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Best flowing and filtering is the Tymar kit next best the AIS with a filter sleeve.
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post #7 of 36 Old 09-11-2013, 09:27 AM
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There is NO "BEST" anything, what is perfect for one may be totally wrong for the next person. If you aren't building over 400 hp than go with the Ford AIS system. My silicon levels are constantly under 5, I haven't found another to be lower, the extra air flow is just a huge bonus. No need to replace the exhaust system, the restriction is in the factory muffler. Replace it with either a straight pipe or a muffler like the BTM which is 3.5" and a straight shot. I used the BTM/AIS combo and have never had a EGT issue. If the system is rusted out, than it is cheaper to go with a 4" system than a 3.5" because so many more make the 4".

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post #8 of 36 Old 09-12-2013, 09:51 AM
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As said there's no perfect answer. If you want a good one with a reasonable price, take a look at the S&B. It's a great value for what you get. You can see a bunch of intakes for the 99-03 7.3L here: Ford 1999-2003 7.3L Powerstroke Cold Air Intake Systems at DieselManor

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post #9 of 36 Old 09-18-2013, 11:05 AM Thread Starter
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I guess my question is whts the diff between all the different styles , i understand all the cold air stuff but i mean theres dry filters , re-usable (k&n ) style filters , closed box (banks) , open .....i guess thats what i mean by "best for truck " ....somebody mentioned silicone levels , whats that all about ?
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post #10 of 36 Old 09-18-2013, 01:06 PM
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Quote:
Originally Posted by NCHornet View Post
There is NO "BEST" anything, what is perfect for one may be totally wrong for the next person. If you aren't building over 400 hp than go with the Ford AIS system. My silicon levels are constantly under 5, I haven't found another to be lower, the extra air flow is just a huge bonus. No need to replace the exhaust system, the restriction is in the factory muffler. Replace it with either a straight pipe or a muffler like the BTM which is 3.5" and a straight shot. I used the BTM/AIS combo and have never had a EGT issue. If the system is rusted out, than it is cheaper to go with a 4" system than a 3.5" because so many more make the 4".
The factory down pipe is restrictive when you add an intake and tuning and get more air into the engine. So id do a 4" turbo back exhaust. I run the s&b intake on mine and love it

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