Cold air vs warm air intake?

[ToxicDevil]

Cold air vs warm air intake does any of them work for decreasing fuel consumption?
We know that ECU tries to maintain a fixed fuel/air ratio.

People say that:
Cold air intake means dense air which means more oxygen i.e efficient consumption.
But more air = more fuel by the ECU.

I can understand more power but how does it decrease fuel consumption instead of increasing it??

Warm air intake = less oxygen which make ecu send less fuel which means less power.

So shouldnt warm air make consumption low?

[tausifs]

Cold air vs warm air intake does any of them work for decreasing fuel consumption?
We know that ECU tries to maintain a fixed fuel/air ratio.

People say that:
Cold air intake means dense air which means more oxygen i.e efficient consumption.
But more air = more fuel by the ECU.

I can understand more power but how does it decrease fuel consumption instead of increasing it??

Warm air intake = less oxygen which make ecu send less fuel which means less power.

So shouldnt warm air make consumption low?

How come hot air means less oxygen. It means in summers the amount of oxygen in air is less! That's hallirious. As per my knowldege , oxygen concentration in air has a relation to pressure and NOT temperature. I didn't understand this physics that you explained. Please correct me if I am wrong or misunderstood the whole concept.......

[ToxicDevil]

How come hot air means less oxygen. It means in summers the amount of oxygen in air is less! That's hallirious. As per my knowldege , oxygen concentration in air has a relation to pressure and NOT temperature. I didn't understand this physics that you explained. Please correct me if I am wrong or misunderstood the whole concept.......

Hot air is less dense. Which means less particles or mass of air per unit volume. Which in turn means less oxygen.

Hope you get it.

[dms664]

To me the so called cold air intakes are actually hot air intakes and vice versa.
why?
because they(aftermarket filters) are present inside the engine compartment and suck the air around the engine or nearby but within the engine room.
On the other hand the stock filter box setup which is refereed to hot or warm air intake takes it air supply from below the fender or bumper through an extended tube and that air must be cooler than the one present inside the engine room.

I may be wrong but this is what my comprehension of the subject is and that is why I prefer the stock setup. Yes you can gain a lil by the aftermarket filter as it ll allow passage of more air as compared to the stock setup.

[tausifs]

Hot air is less dense. Which means less particles or mass of air per unit volume. Which in turn means less oxygen.

Hope you get it.

OK. I searched it. You are somewhat right but the explanation is not as simple as you made it....loll.

[jz]

true
long ram intakes are designed in a way that the filter is outside the engine bay,
like in my corolla 07,the filter resides in the fender,right behing the log light cap,u take off the cap n the filter gets direct cold air.

To me the so called cold air intakes are actually hot air intakes and vice versa.
why?
because they(aftermarket filters) are present inside the engine compartment and suck the air around the engine or nearby but within the engine room.
On the other hand the stock filter box setup which is refereed to hot or warm air intake takes it air supply from below the fender or bumper through an extended tube and that air must be cooler than the one present inside the engine room.

I may be wrong but this is what my comprehension of the subject is and that is why I prefer the stock setup. Yes you can gain a lil by the aftermarket filter as it ll allow passage of more air as compared to the stock setup.

[waseef]

cold air intake increases fuel consumption as performance is also increased.

[jz]

decreases it if u drive on low revs
without long ram intake my car used to do 10km/l with it if i hypermile it does 13-13.5km/l

cold air intake increases fuel consumption as performance is also increased.

[faizandawood007]

Poster u r right about oxygen amount in cold or hot air
Its like both have same size but amount of oxygen is different
and sensor works by amount of oxygen not amount of air
so that conclude more oxygen more fuel and less oxygen means less fuel
more fuel means more performance and consumption and less oxygen means less power and consumption
BUT @jz bhai is right if u r polite with accelerator than u can also get better Mileage
Proving that Cold air intake gives u the ability to get better performance if u rape the accelerator and can also give u better mileage if u r polite with accelerator
And cold air intake does,t mean u put the intake on the engine and say its a cold air intake u have to place the intake far away from the heat of engine where it can get as much cold air as possible and OEM filter can also be a cold air intake

[jz]

yes even if the fitler is placed inside the engine bay but protected from heat ur good to go but long rams are always better

[Shahzan1]

Cold Air Intakes are proven for better performance and better fuel consumption, short ram intakes (warm intakes) Have less oxygen ratio and its bad for the engine block. K&N, Injen, AEM, prove that cold air intakes increase your cars horspower from upto 8 to 20HP. Long Ram, CAI's inhale cold air directly from outside, cold ka matlab yeh naie hotah kae baraf ke tarah hava andr jati hogi, wajah cold air ke yeh hai kae comparatively short ram kee uski hava kafi thandi hoti hai. Cold Air Intakes improve your fuel ratio from 1 to 2 gallon per mile. Simple to install and highly economical in regard to the money they’ll save you at the pump, they’re the number-one choice for anyone looking to boost power, performance and the overall economy of their vehicle.

[Dongskie]

Maybe this can prove a little of something...

Cold Air Intakes Mythbusted - YouTube

[dms664]

Maybe this can prove a little of something...

Cold Air Intakes Mythbusted - YouTube

True

Sent from my HTC One V using Tapatalk 2

[jz]

for many its usless waste of money
for me,its good economy
im using a long ram intake,filter is placed in the fender.
the kms driven in first quarter of fuel are infront of u.
this was achieved by hypermilling.
with inbox filter my car barely does 9.5-10km/l
with this avg economy turned out to be 13.5km/l