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EF and EL/AU Air Box Lids 


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Posted: Sat Jun 17, 2006 2:30 pm 
Getting Side Ways
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Age: 38

Posts: 907

Joined: 13th Jul 2005

Gallery: 10 images

Ride: ef futura/ef fairmont

Location: sydney
NSW, Australia

Why not have the best of both worlds.I do,el piping from throttle body to last flexi bend then a 3' pipe to air box with ef box lid.I cut the inside funnel back to 75mm opening.I picked up 4rwk proven on dyno!



custom airbox,custom intake
paccie comps,lukey 2.5 cat back,high flow cat
CMS stg2 head,CMS stg2.A. cam,CMS hybrid auto with mod shift,3.9 lsd
custom 3500rpm hi stall
ANZ mayhem 18's,custom interior,venom body kit,xr wing,jumbo 2' low springs
143rwkw and 407rwnm on CMS dyno

Posted: Sat Jun 17, 2006 7:33 pm 
Getting Side Ways

Posts: 6449

Joined: 11th Nov 2004

falcon4litreOHC wrote:
If they had actually tested the el lid with the strut tower pipe attached to the lid it would have flowed exactly the same as the EF lid.

Think about it the EF lid funnel is 55mm and goes out to about 75mm. So they tested airbox lid output at 75mm.

The El lid output put is 55mm which is where they tested it from, if they had left the strut tower pipe attached and measured it from the 75mm section the results would nearly be identical.

Both the EF internal pipe and El external pipe are tapered up from 55mm to 75mm. With the difference being one inside and one out with the EL tapered pipe being much longer so as to increase bottom end torque(air velocity is improved at low revs)

That autospeed test doesn't factor in any of this.

so what you are saying is you beleive the the EL piping to be over %100 efficient..?? thats deffinatly an interesting idea :wink:




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