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| EFXRWGN |
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Why does the lid of the EEC V air box have a funnel in it and can it be taken out for better induction?
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| Steady ED |
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A funnel?
Do you mean bellmouthed into the airbox? Bellmouths are there to increase flow. Comparing a flat cutoff pipe, to a bellmouthed one, the bellmouth will outperform everytime. If you wanted to increase flow there, the best way would be to increase the diameter of the pipe entering the airbox, and getting/making a larger bellmouth to suit.
_________________ ED XR8 Sprint - S-Trim, V500, 249rwkw |
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| twr7cx |
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If i remember right the EF air box lids were proven to flow better than the EL or AU ones due to the extra pipe peice inside it.
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| EFXRWGN |
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Steady ED wrote: A funnel?
Do you mean bellmouthed into the airbox? Bellmouths are there to increase flow. Comparing a flat cutoff pipe, to a bellmouthed one, the bellmouth will outperform everytime. If you wanted to increase flow there, the best way would be to increase the diameter of the pipe entering the airbox, and getting/making a larger bellmouth to suit. it looks like a trumpet inside the lid of the air box and it exits where the induction pipe goes to the throttle body. Does this create more suction?
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| Steady ED |
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Yep, that's called a 'bellmouth'
I don't know the science behind how it works, I just know that it does 
_________________ ED XR8 Sprint - S-Trim, V500, 249rwkw |
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| 4.9 EF Futura |
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EFXRWGN wrote: it looks like a trumpet inside the lid of the air box and it exits where the induction pipe goes to the throttle body. Does this create more suction? It sees the source of air drawn through the very middle of the filter and box. As opposed to the EL lid which draws the air directly from that corner of the airbox. Apparantley results in better flow.
_________________ I promise..... I will never die. |
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| Slick |
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you'll find where the EF bellmouth mounts to the airbox & intake pipe is larger then the EL & AU. probably almost double the opening.
EF = 80mm opening. 
AU = 55mm opening. 
_________________ Mind f**k!!! it works on feeble minded ignorant sheeples... there's plenty of em on this site... some are very intelligent but by god they are so thick!!! Pakrat wrote: You can buy them seppertly
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| LG |
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It flows 18% better than the AU and EL lids, according to Autospeed. They did an article on it.
I'm selling one, $30.
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| rushed |
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the ef airbox bellmouth mights be bigger at the intake end of the box but it shrinks down too 55mm ant the pointy end, i ended up cutting about 4cm off of it and sliding my pod onto that pipefits perfectly. just have to mount the pod on and angle as not fouls on the top of the box.
pics are of the box lid and of the lid flipped over.
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| Happy |
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rushed - you wouldn't get much cold air into it would you??
_________________ Owning 1 of 67612 EF GLi Sedans made
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| Dellboy999 |
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An AU intake pipe flowed 118rwkw, an EF intake on the same motor with a POD (no belmouth) flowed 118rwkw, so i dont at what limit the EF will outflow AU in rwkw's but didnt make much difference to a stock AU motor.
_________________ Full working BA Shifter now upgraded to BF Shifter. |
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| Mechan1k |
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What really restricts the AU intake ... is the pipe between the airbox and throttle body.
I proved this at the last dyno day. remove the pipe from the throttle body and I made another 5rwkw. I have the dyno sheet to prove it somewhere ... in the glove box of my car I think
_________________ 04 Territory TX AWD - Winter White - optioned up |
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| MARK.TANIA |
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CUT THE PIPE IN THE AIR BOX AND PUT A KNA FILTER IN IT
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| Krytox |
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surely the bonnet is open and theres a nice fan blowing on the engine bay when u dyno yeh?
if so, there should be some tiny difference with a big hole in the box. ps: why do people bother with airbox mods and panel filters?
_________________ Carefree, we may not be number one, but we're up there. |
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| Sierra |
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EFXRWGN wrote: Steady ED wrote: A funnel? Do you mean bellmouthed into the airbox? Bellmouths are there to increase flow. Comparing a flat cutoff pipe, to a bellmouthed one, the bellmouth will outperform everytime. If you wanted to increase flow there, the best way would be to increase the diameter of the pipe entering the airbox, and getting/making a larger bellmouth to suit. it looks like a trumpet inside the lid of the air box and it exits where the induction pipe goes to the throttle body. Does this create more suction? The bell mouth acts like a venturi in a carburator and increases the air speed as it flows through it.
_________________ 95 EF XR6 Manual |
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