3rd Gen High Performance and Accessories (5.9L Only) Talk about Dodge/Cummins aftermarket products for third generation trucks here. Can include high-performance mods, or general accessories. THIS IS FOR THE 5.9L ONLY!

airbox and a 4" hole

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Old Mar 21, 2007 | 06:45 AM
  #1  
1969mach1's Avatar
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Question airbox and a 4" hole

so if I put a 4" hole in the bottom of my airbox ,and run a dryer vent to exactley where , Id like feedback from someone whos done this ( was it a good idea ) if it wasnt (what went wrong)

THANKS
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Old Mar 21, 2007 | 07:08 AM
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I used a 4" 90 degree drain pipe elbow. Pointed at the passenger side headlight assembly. So far no issues, but I do have pantyhose covering the opening.

MikeyB
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Old Mar 21, 2007 | 07:36 AM
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I did the same as mikeyb. Check out my photos for pics...

Worked good for me. PM me if you want details on what I did, it cost me $6 or so to do.
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Old Mar 21, 2007 | 09:52 AM
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You will not have any problems even if the down pipe was completely submerged in water, snow, mud, etc as long as the stock air box openings are NOT restricted!!!!!

If you have at least 2 (1 factory and 1 "custom") openings in your air box you CAN close one off 1 of them completely and still get full flow out of the other with out sucking up anything but air.
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Old Mar 21, 2007 | 09:56 AM
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So, how did that system work out for you??
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Old Mar 21, 2007 | 07:30 PM
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. Works fantastic. very pleased
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Old Mar 21, 2007 | 07:37 PM
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What are the bennifits to this mod? Are they noticable?
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Old Mar 21, 2007 | 08:44 PM
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Nice set up, kawiram!

I noticed some MPG improvment. I also added a air raid drop in replacement filter, so I'm sure that helped some...
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Old Mar 21, 2007 | 09:52 PM
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Originally Posted by kawiram
. Works fantastic. very pleased
don't forget the new wax ring
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Old Mar 21, 2007 | 10:03 PM
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I used 90 degree elbow and shower grid to keep big stuff out. Run hose to stock foglight hole if empty. Or to fresh air supply if not. Makes the turbo whine, but not much HP or MPG gain.
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Old Mar 21, 2007 | 11:19 PM
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I've havent noticed any extra anything other than actually being able to hear the intake, over the whistle and the straight exhaust. But I am currently running a stock replacement filter so I believe if you were gonna gain anything with this mod you'd need a better flowing filter to take advantage of the extra inlet. Theres a website that charges like $99 bucks to do the same thing and they claim it's main achievement is lower EGT's while towing.
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Old Mar 21, 2007 | 11:23 PM
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You might want to drop in an Amsoil Ea189 filter I believe. Dry and better flowing.
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Old Mar 21, 2007 | 11:28 PM
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Thats the dropin replacement? Where would I find one at? TIA
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Old Mar 21, 2007 | 11:43 PM
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http://www.syntheticoilspecialties.com try here. Yes it's drop in.
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Old Mar 22, 2007 | 12:08 AM
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If you wanna see what gain is possible, just go for a drive without the cover and filter for two blocks and then put it back on.

I live on the edge though. The purists should chime in here and tell you your motor will blow. I hope it doesnt, good luck to ya.








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