Cold air = bad???

ashah000 · #1 12-09-2003, 09:17 AM

I was reading the reviews on 2gnt and then i read this one... http://www.2gnt.com/nuke/modules.php...wcontent&id=85

It was saying that cold air is actually bad for your engine, you need some warm air, the cold air will dry the gas before it gets burned. Is this really true???

turbo2nr · #2 12-09-2003, 10:43 AM

from what i know cold air is always better for your combustion...
1

duckydsp · #3 12-09-2003, 01:20 PM

Cold air intakes can easily suck up water which is bad for the engine.

EclipseRST · #4 12-09-2003, 02:44 PM

it doesnt suck it up that easily, more likly to when there is a really bad rain storm or you are driving through puddles, a lake, or a river

but other than that it isnt bad at all, i know when i use to have it i just wouldnt drive crazy in the rain, and i never had a problem!

ashah000 · #5 12-09-2003, 02:59 PM

I am not talking about the water!!!

EclipseRST · #6 12-09-2003, 05:02 PM

well duckydsp was and thats who i was replying to!!! OBVIOUSLY

and now i will reply to you, colder air is better for the engine! why would companys make intercoolers? and cold air intakes if it wasnt? its been proven a hundred times that your cars performance is better with cooler air, its not like the air is 5 degrees... it is somewhat warm, you engine is gunna perform differnt in the winter anyway so i am talking about summer weather! the temperature of the air on average in the summer depending on where you live will most likly be in the 60-80 degrees, now tell me that that temp is cold!!!

soyee7 · #7 12-09-2003, 08:28 PM

colder air is more dense and pack in more oxygen making your car burn your fuel more efficiantly, in turn leading to higher hp and overall performance. Now, cold air can be a problem if the air is very cold and your not giving your engin enough fuel. That can cause your car to run too lean, and cause engine failur. only if you have a larger turbo with stock injectors and a large intercooler would you really have to worry about getting too cold of air which very rarley happens. I personaly havnt herd of anybody blowing up motors because of too cold of air but i have read about it a few times.

95_GSX · #8 12-10-2003, 12:25 AM

on a side note, i had a shop instructor in high school that said the optimum air intake teperature is 47.8 deg Farenheit. anyone know any more about this???

kjewer1 · #9 12-10-2003, 08:03 AM

I've never heard of that, and it seems way to accurate (to one decimal place) to be true. But, on the other hand, the stock 2g ECU (and perhaps 1g, never looked into it) WILL pull 1 degree of timing out below 35 degrees, just like it will over 84 degrees. Coincidence? I never really stopped to question why they do that, I'll have to look into it.

95_GSX · #10 12-10-2003, 08:12 PM

Quote:

Originally Posted by 95 GSXracer

I've never heard of that, and it seems way to accurate (to one decimal place) to be true.

well to my understanding that was what temp was found in a lab in which the fuel and air could make the most power. and again that was just what i was told. the instructer knew his shit though. he use to run in a mini tractor pull series. and had been a mechanic all his life. so i trust him in the information he gave. but i guess it will be something to research.

AmericanEagle · #11 12-10-2003, 08:26 PM

From what I know intake air can be too cold. Air too cold prevents fuel from properly vaporizing. This is more of a problem for engines using a Carb. Fuel injection I would assume is only effected mildly. Overall the cooler and dryer the better I would say, simply because the turbo is going to heat it all up again. I ran a few weeks ago with my hood off and noticed a slight increase in power. The temp was like 35 degrees something like 30% humidity. Head stayed nice and cool along with the turbo.

Kaleco · #12 12-11-2003, 11:17 AM

the only theory i heard about cold air...is with the turbo...that cold air with a turbo messes up air : fuel ratio or something like that...that's what i heard is tru about the new Evo...but i dunno if that is tru about the older DSM's is it and is it even tru with the EVO?

kjewer1 · #13 12-11-2003, 12:45 PM

Only if the ECU is shyte. There is an intake temp sensor in all cars (except those with hot-wire air flowsensors, the sensor itself takes air temp into account by the process by which is measures air) that will compensate so AFR stays correct. No dSM or EVO will have problems with this.

swest_jefe · #14 12-13-2003, 04:01 PM

I dont know if you can get TOO cold, but on a turbo car im sure you want as cool as possible because the pressure increase is going to heat it quite a bit, so I doubt you could get too cold air into the engine.

Hypsi87 · #15 12-13-2003, 04:14 PM

Quote:

Originally Posted by swest_jefe

I dont know if you can get TOO cold, but on a turbo car im sure you want as cool as possible because the pressure increase is going to heat it quite a bit, so I doubt you could get too cold air into the engine.

id have to agree with that it does not matter how cold it is that turbo will heat it up nice and warm.

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