cold air intake qiestion

2002 honda civic ex 5 speed....not a mod kinda guy but heard that a
cold air intake will improve my mileage as well as give me a modest
boost in hp. i bought a V2 cold air induction systems from AEM and
and did a little research and now am a little worried that after me a
buddy put it on i will be running the risk of the car hydro seizing.
is this a real threat? PS AEM doesnt make a blow out valve for the V2
system. any advice or tips are greatly appreciated..... just dont
tell me to avoid large puddles. thanx

On Jul 13, 9:44 pm, 02civic > wrote:
> 2002 honda civic ex 5 speed....not a mod kinda guy but heard that a
> cold air intake will improve my mileage as well as give me a modest
> boost in hp. i bought a V2 cold air induction systems from AEM and
> and did a little research and now am a little worried that after me a
> buddy put it on i will be running the risk of the car hydro seizing.
> is this a real threat? PS AEM doesnt make a blow out valve for the V2
> system. any advice or tips are greatly appreciated.....

You will gain little performance benefit if any from an overpriced
tube and oil gauze filter kit. If this junk ricer kit exits in or
around one of the wheel wells, then yes, more water will get in the
intake than with the OE setup. On the bright side, nothing short of
full submersion will cause a full gulp of water to make its way into
the engine, so there is no significant danger of rod damage ever
occuring. I will say, the more chrome and polished aluminum you can
stuff under a hood, the cooler the underhood neon lighting looks.

> just dont tell me to avoid large puddles. thanx

I was going to because it would have been sound advice, but now I will
not. Please, aim for all of the casual water you can manage.

Toyota MDT in MO

On Fri, 13 Jul 2007 19:57:55 -0700, Comboverfish wrote:

> On Jul 13, 9:44 pm, 02civic > wrote:
>> 2002 honda civic ex 5 speed....not a mod kinda guy but heard that a cold
>> air intake will improve my mileage as well as give me a modest boost in
>> hp. i bought a V2 cold air induction systems from AEM and and did a
>> little research and now am a little worried that after me a buddy put it
>> on i will be running the risk of the car hydro seizing. is this a real
>> threat? PS AEM doesnt make a blow out valve for the V2 system. any
>> advice or tips are greatly appreciated.....
>
> You will gain little performance benefit if any from an overpriced tube
> and oil gauze filter kit. If this junk ricer kit exits in or around one
> of the wheel wells, then yes, more water will get in the intake than with
> the OE setup. On the bright side, nothing short of full submersion will
> cause a full gulp of water to make its way into the engine, so there is no
> significant danger of rod damage ever occuring. I will say, the more
> chrome and polished aluminum you can stuff under a hood, the cooler the
> underhood neon lighting looks.

Hey, MDT, I added a mandrel-bent tube and 'high performance' filter to my
'95 Tercel, and what I *DID* get was more responsive throttle response,
especially right off the line, and an additional 5MPG, from 38 to 43-45
combined MPG.

That, and a "giant sucking sound" from under the hood!

But mine stayed inside the engine compartment, with the end of the filter
pointing to the openeing in the fender where the air came into the stock
airbox.


>
>> just dont tell me to avoid large puddles. thanx
>
> I was going to because it would have been sound advice, but now I will
> not. Please, aim for all of the casual water you can manage.
>
> Toyota MDT in MO

On Jul 13, 9:44 pm, 02civic > wrote:
> 2002 honda civic ex 5 speed....not a mod kinda guy but heard that a
> cold air intake will improve my mileage as well as give me a modest
> boost in hp. i bought a V2 cold air induction systems from AEM and
> and did a little research and now am a little worried that after me a
> buddy put it on i will be running the risk of the car hydro seizing.
> is this a real threat? PS AEM doesnt make a blow out valve for the V2
> system. any advice or tips are greatly appreciated..... just dont
> tell me to avoid large puddles. thanx

The cold air intake will boost power, but not mileage very much. It
boosts power because cold air is denser. Power from an engine of a
given displacement is proportional to weight of fuel air mixture
inducted, not its volume. There would be a small change in ratios of
pressures (higher compression pressure) that would be a small increase
in efficiency, but only at full throttle operation. Unless you drive
wide open for long periods, you will never operate in the range where
this effect will do much.

Actually, same thing with power. Unless you are racing, you will
never notice a small change in wide open throttle power. If you are
talking about a competition vehicle, that is something else.

A change (lowering) of air density is the equivalent of having the
throttle backed off just a smidgen.

On Fri, 13 Jul 2007 19:44:52 -0700, 02civic >
wrote:

>2002 honda civic ex 5 speed....not a mod kinda guy but heard that a
>cold air intake will improve my mileage as well as give me a modest
>boost in hp.

Boost in noise, not in power. The psychological effect of the noise
is such that many convince themselves there is a power increase.
When you look at the highly sophsiticated engineering that today's
vehicle manufacturer's come up with to maximize fuel mileage it is
absurd to think that they would throw any of it away with an
inadequate intake system.

> i bought a V2 cold air induction systems from AEM and
>and did a little research and now am a little worried that after me a
>buddy put it on i will be running the risk of the car hydro seizing.
>is this a real threat?

Well we recently diagnosed a Mitsubish Eclipse with a destroyed engine
from driving through water with an aftermarket intake. Insurance guy
said he sees it on Hondas regularly.

Don
www.donsautomotive.com


>PS AEM doesnt make a blow out valve for the V2
>system. any advice or tips are greatly appreciated..... just dont
>tell me to avoid large puddles. thanx

02civic wrote:
> 2002 honda civic ex 5 speed....not a mod kinda guy but heard that a
> cold air intake will improve my mileage as well as give me a modest
> boost in hp. i bought a V2 cold air induction systems from AEM and
> and did a little research and now am a little worried that after me a
> buddy put it on i will be running the risk of the car hydro seizing.
> is this a real threat? PS AEM doesnt make a blow out valve for the V2
> system. any advice or tips are greatly appreciated..... just dont
> tell me to avoid large puddles. thanx
>

Blowing your engine with water is a real threat.

Jeep mistakenly put a ram air system on some Wranglers that picks up
right below the headlight on top of the bumper. If they hit a puddle
that splashes over the bumper, it goes Gulp, Bang!

Someone has given you the correct advice about puddles it would seem...

Mike
86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
88 Cherokee 235 BFG AT's - Gone to the rust pile...
Canadian Off Road Trips Photos: Non members can still view!
Jan/06 http://www.imagestation.com/album/pi...?id=2115147590
(More Off Road album links at bottom of the view page)

Don wrote:
> On Fri, 13 Jul 2007 19:44:52 -0700, 02civic >
> wrote:
>
>> 2002 honda civic ex 5 speed....not a mod kinda guy but heard that a
>> cold air intake will improve my mileage as well as give me a modest
>> boost in hp.
>
> Boost in noise, not in power. The psychological effect of the noise
> is such that many convince themselves there is a power increase.
> When you look at the highly sophsiticated engineering that today's
> vehicle manufacturer's come up with to maximize fuel mileage it is
> absurd to think that they would throw any of it away with an
> inadequate intake system.
>

FWIW, on my Trans Am, replacing the stock intake lid with an aftermarket
one has been shown to worth 5-10hp. That may not be much, and would
probably be only about 2-5hp on a smaller engine like a Civic, but for
racing purposes, any +hp is ok with me.

If you're wondering why GM could do such a crappy job with all the
engineering resources they have, it's a simple one - noise regs for new
car companies don't apply to the aftermarket. The stock LS1 intake lid
and ductwork has a big resonator attached to it that the aftermarket
ones dispense with, and the "mouth" going to the TB is reworked to line
up better.

My car ran a best of 13.367 before the lid, and a best of 13.116 after
the lid. No other mods.
(13.367 @ 103.376mph, 1.974 60' and
13.116 @ 105.246mph, 1.915 60')

The aftermarket lid also meant I didn't have to cut up a factory lid
when installing the nitrous kit.
(which dropped my ET to a 12.18 @ 112 and killed the stock clutch.)

The OP is still stuck driving a Civic tho.

Ray

"Don Stauffer in Minnesota" > wrote in message
oups.com...
> On Jul 13, 9:44 pm, 02civic > wrote:
>> 2002 honda civic ex 5 speed....not a mod kinda guy but heard that a
>> cold air intake will improve my mileage as well as give me a modest
>> boost in hp. i bought a V2 cold air induction systems from AEM and
>> and did a little research and now am a little worried that after me a
>> buddy put it on i will be running the risk of the car hydro seizing.
>> is this a real threat? PS AEM doesnt make a blow out valve for the V2
>> system. any advice or tips are greatly appreciated..... just dont
>> tell me to avoid large puddles. thanx
>
> The cold air intake will boost power, but not mileage very much. It
> boosts power because cold air is denser. Power from an engine of a
> given displacement is proportional to weight of fuel air mixture

The cold air intake probably won't make much difference; all cars have had
such a setup for 20 years or so. They may not suck air thru the hood but
they do have some kind of system where it gets cool air rather than the hot
engine bay air.

02civic > wrote:
>2002 honda civic ex 5 speed....not a mod kinda guy but heard that a
>cold air intake will improve my mileage as well as give me a modest
>boost in hp. i bought a V2 cold air induction systems from AEM and
>and did a little research and now am a little worried that after me a
>buddy put it on i will be running the risk of the car hydro seizing.
>is this a real threat? PS AEM doesnt make a blow out valve for the V2
>system. any advice or tips are greatly appreciated..... just dont
>tell me to avoid large puddles. thanx

These gadgets do two things. First of all, they route the intake to
a place where it can get cold and more dense air. Secondly, they use
a lower resistance air filter. Both of these are good things.

BUT, you need to look at the air filter and baffling they use. Some of
them use reusable oiled filters which have very high flow, but poorer
filtration than the stock filter. Some of them don't have a lot of
baffling to block water.

If they are properly designed, the filter will keep water from getting into
the engine. If they are poorly designed, the filter won't keep water OR
dirt from getting into the engine. And a lot of the ones out there are
poorly designed.
--scott
--
"C'est un Nagra. C'est suisse, et tres, tres precis."

Scott Dorsey wrote:
> 02civic > wrote:
>> 2002 honda civic ex 5 speed....not a mod kinda guy but heard that a
>> cold air intake will improve my mileage as well as give me a modest
>> boost in hp. i bought a V2 cold air induction systems from AEM and
>> and did a little research and now am a little worried that after me a
>> buddy put it on i will be running the risk of the car hydro seizing.
>> is this a real threat? PS AEM doesnt make a blow out valve for the V2
>> system. any advice or tips are greatly appreciated..... just dont
>> tell me to avoid large puddles. thanx
>
> These gadgets do two things. First of all, they route the intake to
> a place where it can get cold and more dense air. Secondly, they use
> a lower resistance air filter. Both of these are good things.
>
> BUT, you need to look at the air filter and baffling they use. Some of
> them use reusable oiled filters which have very high flow, but poorer
> filtration than the stock filter. Some of them don't have a lot of
> baffling to block water.
>
> If they are properly designed, the filter will keep water from getting into
> the engine. If they are poorly designed, the filter won't keep water OR
> dirt from getting into the engine. And a lot of the ones out there are
> poorly designed.
> --scott

And if you over-oil the filter, kiss your MAF goodby.