| Author |
Message |
Charles Mohney
Guest
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 Posted:
Mon Nov 29, 2004 5:44 am Post subject:
Aftermarket Air Intakes? Fact or Fiction |
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What would an air ram type air filter really add to my 2.4L 98 Frontier?
I feel the engine could use more air intake as when a wing nut on the air
filter cover was missing I could hear a whistling sound on wide open
throttle.
Does that mean that my engine is pulling more air than the stock intake can
provide?
What happens with the air flow sensor input with an air ram filter, what
effects on the system without this working?
Any good, bad, indifferent results - experiences?
TIA
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Steve T
Guest
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| Posted:
Mon Nov 29, 2004 5:44 am Post subject:
Re: Aftermarket Air Intakes? Fact or Fiction |
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Charles Mohney wrote:
| Quote: | What would an air ram type air filter really add to my 2.4L 98 Frontier?
I feel the engine could use more air intake as when a wing nut on the air
filter cover was missing I could hear a whistling sound on wide open
throttle.
Does that mean that my engine is pulling more air than the stock intake
can provide?
What happens with the air flow sensor input with an air ram filter, what
effects on the system without this working?
Any good, bad, indifferent results - experiences?
|
Very little measurable gain using these. The OEM's aren't going to give up
several HP by using an air filter that is too small given how HP crazy
people are today. At best you =MIGHT= see 2-3HP and at the same time gain a
BUNCH of intake noise. Also some designs draw hot air from the engine bay
which hurts power..
What people "think" is: this is making a huge difference because of all the
noise, just like those "fart can" mufflers make a car sound faster while
doing nothing for the actual performance. Anyone who claims more MPG is
-wrong-, the stock air box/filter can easily deal with cruising air flow.
--
Steve
http://www.atlantaracing.com |
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I'm Right
Guest
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| Posted:
Mon Nov 29, 2004 10:31 pm Post subject:
Re: Aftermarket Air Intakes? Fact or Fiction |
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fiction
"Charles Mohney" <cmohney@cox.net> wrote in message
news:pQxqd.102584$tU4.50540@okepread06...
| Quote: | What would an air ram type air filter really add to my 2.4L 98 Frontier?
I feel the engine could use more air intake as when a wing nut on the air
filter cover was missing I could hear a whistling sound on wide open
throttle.
Does that mean that my engine is pulling more air than the stock intake
can
provide?
What happens with the air flow sensor input with an air ram filter, what
effects on the system without this working?
Any good, bad, indifferent results - experiences?
TIA
|
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| Back to top |
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Peter Hill
Guest
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| Posted:
Wed Dec 01, 2004 12:40 am Post subject:
Re: Aftermarket Air Intakes? Fact or Fiction |
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On Sun, 28 Nov 2004 22:46:27 -0600, "Charles Mohney" <cmohney@cox.net>
wrote:
| Quote: | What would an air ram type air filter really add to my 2.4L 98 Frontier?
|
hot air
| Quote: | I feel the engine could use more air intake as when a wing nut on the air
filter cover was missing I could hear a whistling sound on wide open
throttle.
Does that mean that my engine is pulling more air than the stock intake can
provide?
|
yes
| Quote: | What happens with the air flow sensor input with an air ram filter, what
effects on the system without this working?
Any good, bad, indifferent results - experiences?
|
The stock cold feed duct on most cars is rubbish, they usually have a
restrictive S bend in them causing about 1/3 of total inlet pressure
drop. Just change the OEM filter 2-3 times more often and add extra
cold air duct or ducts into the dirty side of the filter housing fed
from high pressure areas in front of the slam panel. Will work as
well if not better than a hot air induction kit.
Typically about 3-5% of inlet pressure loss is due to filter when it's
new and clean. K&N claim their filter reduces the loss due to filter
by 10% so that's just 0.3-0.5% reduction in total intake loss. They
also claim about 4% power gain - all due to removal of intake snorkel. |
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Charles Mohney
Guest
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| Posted:
Wed Dec 01, 2004 5:41 am Post subject:
Re: Aftermarket Air Intakes? Fact or Fiction |
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Thanks for thoughtfull response!
"Peter Hill" <peter.usenet1@nospam.demon.co.uk> wrote in message
news:qoepq0pl92f16t39ekd4o673rkgp0acjfu@4ax.com...
| Quote: | On Sun, 28 Nov 2004 22:46:27 -0600, "Charles Mohney" <cmohney@cox.net
wrote:
What would an air ram type air filter really add to my 2.4L 98 Frontier?
hot air
I feel the engine could use more air intake as when a wing nut on the air
filter cover was missing I could hear a whistling sound on wide open
throttle.
Does that mean that my engine is pulling more air than the stock intake
can
provide?
yes
What happens with the air flow sensor input with an air ram filter, what
effects on the system without this working?
Any good, bad, indifferent results - experiences?
The stock cold feed duct on most cars is rubbish, they usually have a
restrictive S bend in them causing about 1/3 of total inlet pressure
drop. Just change the OEM filter 2-3 times more often and add extra
cold air duct or ducts into the dirty side of the filter housing fed
from high pressure areas in front of the slam panel. Will work as
well if not better than a hot air induction kit.
Typically about 3-5% of inlet pressure loss is due to filter when it's
new and clean. K&N claim their filter reduces the loss due to filter
by 10% so that's just 0.3-0.5% reduction in total intake loss. They
also claim about 4% power gain - all due to removal of intake snorkel.
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David Geesaman
Guest
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| Posted:
Wed Dec 01, 2004 5:24 pm Post subject:
Re: Aftermarket Air Intakes? Fact or Fiction |
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"Charles Mohney" <cmohney@cox.net> wrote in message
news:qk9rd.102747$tU4.101605@okepread06...
| Quote: | Thanks for thoughtfull response!
"Peter Hill" <peter.usenet1@nospam.demon.co.uk> wrote in message
news:qoepq0pl92f16t39ekd4o673rkgp0acjfu@4ax.com...
On Sun, 28 Nov 2004 22:46:27 -0600, "Charles Mohney" <cmohney@cox.net
wrote:
What would an air ram type air filter really add to my 2.4L 98 Frontier?
hot air
I feel the engine could use more air intake as when a wing nut on the
air
filter cover was missing I could hear a whistling sound on wide open
throttle.
Does that mean that my engine is pulling more air than the stock intake
can
provide?
yes
What happens with the air flow sensor input with an air ram filter, what
effects on the system without this working?
Any good, bad, indifferent results - experiences?
The stock cold feed duct on most cars is rubbish, they usually have a
restrictive S bend in them causing about 1/3 of total inlet pressure
drop. Just change the OEM filter 2-3 times more often and add extra
cold air duct or ducts into the dirty side of the filter housing fed
from high pressure areas in front of the slam panel. Will work as
well if not better than a hot air induction kit.
Typically about 3-5% of inlet pressure loss is due to filter when it's
new and clean. K&N claim their filter reduces the loss due to filter
by 10% so that's just 0.3-0.5% reduction in total intake loss. They
also claim about 4% power gain - all due to removal of intake snorkel.
|
Peter, that sounds like the voice of a designer speaking. Mind sharing
your background in this subject?
Dave |
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Peter Hill
Guest
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| Posted:
Wed Dec 01, 2004 10:54 pm Post subject:
Re: Aftermarket Air Intakes? Fact or Fiction |
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On Wed, 1 Dec 2004 07:24:30 -0500, "David Geesaman"
<dgeesamandontspam@yahoo.com> wrote:
| Quote: | Peter, that sounds like the voice of a designer speaking. Mind sharing
your background in this subject?
|
I work as an Engineer for an engine maker based in Derby, England. |
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