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I got a 2004 tundra with the 4.7 engine. I was wondering which intake to go with? I want the one that gives you the most horsepower.............HELP!!!

As many different opinions as there are truck owners. Me, personally, the stock intake is a true cold air intake. Having said that, it does have a few restrictions.

http://www.tundrasolutions.com/foru...ystems/109612-stock-air-flow-numbers-and-mod/

I designed my own ram air intake which has helped a little on acceleration as well as fuel economy.

http://www.tundrasolutions.com/forums/forced-induction-systems/173400-ram-air-intake-scoop/

I am running a True Flow drop in foam filter and find that it does filter better. I had a K&N for 16,000 miles and just from the condition of the filter when I took it out (it was as clean as it was when it went in) felt that it did not filter very well. The True Flow was absolutely filthy when I cleaned it after 4,000 miles.

http://www.tundrasolutions.com/forums/1322872-post31/

There is a ton of stuff here on the Forum about cold air intakes but my opinion is, strictly on CAI that the stock set-up is a true CAI - just has some limitations. Best filter is stock or a foam filter - K&N does not filter as well but does flow like living hell.
 

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To the OP: I'd listen to this guy... he's done more exploration on airflow on the 4.7L than anyone I've seen. He knows from whence he speaks! :tu:
Hey Remmy,

Thanks for the kudos. Hi-Volt is really the guy who got all my testing started by providing the evidence of the vacuum (or restriction) while working on his air box modification. Even so, I have done a ton of testing and think I know a little bit about it. I still love my True Flow and feel it filters better than the K&N. Absent an oil analysis I can offer no evidence other than eyeballing the grunginess of the filter; the True Flow was filthy after 4,000 miles and after 16,000 miles the K&N was as clean as it was when I installed it.
 
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