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Induction kits

Cars Modifications Aspects of car modifications (tuning, styling) (uk.rec.cars.modifications)


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  #21  
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JK
 
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Default Re: Induction kits - 04-29-2004 , 05:17 PM






And you can eat it if you get a headache......No hold on that's an
ASPRIN.....!
"Guy King" <guy.king (AT) zetnet (DOT) co.uk> wrote

Quote:
The message <4ca73d03c0dave.sound (AT) argonet (DOT) co.uk
from Dave Plowman <dave.sound (AT) argonet (DOT) co.uk> contains these words:

I was thinking of getting an Apiro air filter

Why?

It has a nice name?

And a proven track-record (in relieving teenagers of their dosh).

--
"Bother", said Skipweasel as he molished a little jig.





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  #22  
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Martin \(Please note spammers email address used\)
 
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Default Re: Induction kits - 04-30-2004 , 03:20 AM






Get a panel filer for original air box



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  #23  
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Martin \(Please note spammers email address used\)
 
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Default Re: Induction kits - 04-30-2004 , 03:33 AM



Quote:
I asked a similar question when I bought my 190E 2.6 (NOTE: Not as a bot
racr), and got a lot of people telling me that a K&N filter would
improve the longevity of my engine by cleaning the air more compleatly.
What that a heap of bull?
K&N Panel filters

Flow better than any filter

Clean the air better than any filter

Need cleaning regularly

I'd recommend them!

On my last car changed the air filter once in 5 years - cleaned it every 6
months




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  #24  
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Martin \(Please note spammers email address used\)
 
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Default Re: Induction kits - 04-30-2004 , 03:33 AM



Two things here!

A) Induction Kits

B) Better filtration

A) can lower power through hot air intake

B) Usually means a little more power but mainly a filter you clean rather
than throw away, which is more efficient



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  #25  
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Sales!
 
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Default Re: Induction kits - 04-30-2004 , 06:17 AM



Apparently on date Fri, 30 Apr 2004 08:33:11 +0000 (UTC), "Martin \(Please note
spammers email address used\)" <avtoteplo (AT) altern (DOT) org> said:

Quote:
A) can lower power through hot air intake
I'm wondering about this a bit. Cold air is denser, no error there, but the
fuel computer takes air mass into account when adding the petrol via the
injectors.

At part throttle, you're holding the pedal in a position that achieves the
power necessary to maintain speed. If you have warm air, this means your pedal
is slightly further to the floor, but you're using no more fuel than with cold
air and a higher pedal. In fact, you'd be drawing in exactly the same mass of
air whatever the temperature, and injecting the same mass of fuel per cycle.

The density could mean the mixture is slightly more spread out in the cylinder,
so flame front would be slightly slower propagating, however that means,
surely, you could run a slightly higher compression ratio and not knock.

At higher engine speeds, my gut feel is the engine will have less air in it and
that means less power, but as a long ducting will cause a higher manifold
vacuum, I'm not sure this would have a real effect at all, without doing some
practical tests.

There must be some reason why this isn't how it works, because modern cars all
seem to take their feed from the cooler air next to the radiator, and they've
tested this extensively, right?



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  #26  
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Nom
 
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Default Re: Induction kits - 04-30-2004 , 06:28 AM



Sales! wrote:
Quote:
Apparently on date Fri, 30 Apr 2004 08:33:11 +0000 (UTC), "Martin
\(Please note spammers email address used\)" <avtoteplo (AT) altern (DOT) org
said:

A) can lower power through hot air intake

I'm wondering about this a bit. Cold air is denser, no error there,
but the fuel computer takes air mass into account when adding the
petrol via the injectors.

At part throttle, you're holding the pedal in a position that
achieves the power necessary to maintain speed. If you have warm air,
this means your pedal is slightly further to the floor, but you're
using no more fuel than with cold air and a higher pedal. In fact,
you'd be drawing in exactly the same mass of air whatever the
temperature, and injecting the same mass of fuel per cycle.
"part throttle" is the operative phrase in your statement.

At full throttle, the cooler the air, the denser it is, so the more air you
can fit in there, so the more fuel can be injected, so the more power you
make.




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  #27  
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Guy King
 
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Default Re: Induction kits - 04-30-2004 , 08:38 AM



The message <c6t306$qpp$1 (AT) titan (DOT) btinternet.com>
from "Martin \(Please note spammers email address used\)"
<avtoteplo (AT) altern (DOT) org> contains these words:

Quote:
I'd recommend them!
Why? What are their benefits? You'd listed a few attributes, but it's
not clear than they are advantageous.

--
"Bother", said Skipweasel as he molished a little jig.




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  #28  
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Guy King
 
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Default Re: Induction kits - 04-30-2004 , 08:39 AM



The message <c6td7p0diq (AT) news3 (DOT) newsguy.com>
from "Nom" <Nom (AT) Somewhere (DOT) Somewhere> contains these words:

Quote:
At full throttle, the cooler the air, the denser it is, so the more air you
can fit in there, so the more fuel can be injected, so the more power you
make.
Frankly, the kind of kids who drive around at full throttle are exactly
the sort that these toys are designed to seperate from their money.

--
"Bother", said Skipweasel as he molished a little jig.




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  #29  
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Dave Plowman
 
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Default Re: Induction kits - 04-30-2004 , 12:30 PM



In article <7mt4901a284sqn8v4srvcsgo14otjk1k8r (AT) 4ax (DOT) com>,
Peter Hill <peter.usenet1 (AT) nospam (DOT) demon.co.uk> wrote:
Quote:
The OEM cold air intake is usually the most restrictive part of the
inlet system. Often just punching holes (using a nice neat tank
cutter) in the inlet side of the air filter housing will give a
performance improvement, even though it results in hot air induction.
And f**k up the tuned inlet tract.

--
*Middle age is when it takes longer to rest than to get tired.

Dave Plowman dave.sound (AT) argonet (DOT) co.uk London SW 12
RIP Acorn


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  #30  
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Sales!
 
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Default Re: Induction kits - 04-30-2004 , 12:31 PM



Apparently on date Fri, 30 Apr 2004 14:38:50 +0100, Guy King
<guy.king (AT) zetnet (DOT) co.uk> said:

Quote:
The message <c6t306$qpp$1 (AT) titan (DOT) btinternet.com
from "Martin \(Please note spammers email address used\)"
avtoteplo (AT) altern (DOT) org> contains these words:

I'd recommend them!

Why? What are their benefits? You'd listed a few attributes, but it's
not clear than they are advantageous.
K&N make decent filters, to be fair. I wouldn't have a problem putting one in,
although I wouldn't expect much difference over the paper element, except of
course the longer life and option to clean the filter.

If you modify the car, though, the airflow arrangements are almost certainly
not up to the increased airflow the modified engine will demand, what with us
being in rec.car.mods among other places.

Easiest way to do this is take off the trunking from the MAF upwards and put a
conical filter on it. It's unlikely your car manufacturer sells a filter for
when you do this, but K&N will.




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