Ram air duct into sealed cold air box

tekdeus

tekdeus

Pronounced Tek-DAY-us
Jan 23, 2006
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Has anyone built a ram air duct that feeds into a into sealed cold air box that houses the air filter? Cold air being the 1st benefit, but then having increased flow and pressure helping the turbo at highway speeds. Would there be a noticable improvement?

With my new bumper I may have room to install a duct and get lots of air.
 
I

IJ.

Grumpy Old Man
Mar 30, 2005
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I come from a land down under
From memory I saw a 15c drop in Temps at the TB Blake, back then this allowed me to run 30psi/8300rpm on the dyno, before that I melted a motor at 26psi during a hard run.
 
M

Ma70.Ent

Supramania Contributor
Feb 26, 2006
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I've actually been getting ready to do this mod. Not sure if it'll help a lot but who knows....
 
SilverSupraT

SilverSupraT

7M '78 Toyota Pickup
Oct 3, 2005
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IJ.;1043613 said:
From memory I saw a 15c drop in Temps at the TB Blake, back then this allowed me to run 30psi/8300rpm on the dyno, before that I melted a motor at 26psi during a hard run.
Click to expand...

Thanks IJ, THAT is usable info, much appreciated! The pics are nice too :)
 
Brady

Brady

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Feb 4, 2007
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i would love to see a dyno comparison between one of these "Cold air intakes" and your regular apexi filter bolted onto the end of a stock setup.

it was my understanding that the intercooler does more cooling of the air than any cold air intake could do. Besides, as soon as the "cold" air gets spun in the hotass turbo it gets heats up lickety split.
 
Rennat

Rennat

5psi...? haha
Dec 6, 2005
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IJ your idea seem to be the most logical, it keeps the filter from getting water logged and getting taken out from things that are kicked up on the road.

and if you have colder air to start out with, then it will heat up less as its compressed. which is why a cold air is good for turbo cars.
 
romaniello

romaniello

New Member
Oct 28, 2005
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Rennat;1043816 said:
IJ your idea seem to be the most logical, it keeps the filter from getting water logged and getting taken out from things that are kicked up on the road.
Click to expand...

Those might be good side benefits, except I believe his real reason is that down under he's not allowed to run an open filter.
 
7MGTEsup

7MGTEsup

Formerly 'Down but not out'
Jun 14, 2005
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IJ.;1044080 said:
Yep the Can was a legallity thing the ducting was purely performance oriented ;)
(not a fan at all of front mounted ducts as I drive my car in the Winter)
Click to expand...

So I take it the duct just sits in the void behind the wheel arch liner?
 
Orion ZyGarian

Orion ZyGarian

Jeff Lange wannabe
Apr 2, 2005
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Brady;1043732 said:
i would love to see a dyno comparison between one of these "Cold air intakes" and your regular apexi filter bolted onto the end of a stock setup.
Click to expand...
I would as well

Brady;1043732 said:
it was my understanding that the intercooler does more cooling of the air than any cold air intake could do. Besides, as soon as the "cold" air gets spun in the hotass turbo it gets heats up lickety split.
Click to expand...

It does most of it, but that was a really stupid comment...would you rather have winter air coming in or summer air? According to your theory, it wouldnt matter. However, cooler air coming in will get heated up roughly the same rate as hot air would; so the cooling air would still be cooler. Not to mention if its cooler outside, the intercooler will do a better job.
 
SupraMario

SupraMario

I think it was the google
Mar 30, 2005
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IJ.;1044080 said:
Yep the Can was a legallity thing the ducting was purely performance oriented ;)
(not a fan at all of front mounted ducts as I drive my car in the Winter)
Click to expand...

WTF? Winter?
 
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