Cold air or ram air? - Subaru WRX Forum
 
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#1 Old 12-22-2009, 09:41 PM
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Question Cold air or ram air?

What is better a cold air or ram air?
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#2 Old 12-22-2009, 09:45 PM
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Ram air does NOTHING for a turbo car.

Brad

AEM CAI, Perrin ELH wrapped, Catted Downpipe, Stage II XPT tune, K4RT30Y STS, lip, shark fin
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#3 Old 12-22-2009, 09:56 PM
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Look up on some posts on here that talk about modifying your stock air box, you can still make alot of power out of doing this to your airbox, Go out and buy a nice drop in air filter for it and people have cut them up and still made the car breath a lot better than it did. Also i know tuners say it is easier to tune a car with the stock air box that some cold air intake or something like that as well.

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#4 Old 12-22-2009, 10:49 PM
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Ok, the links arent working on here for some reason. In the newbie section there is a link about CAIS and BOVs, check it out, it explains why they arent good, or worth much without more work than just bolting them on.

Joshua
"2007 WRX- PPG'd, 20G- Tim Bailey tuned
Stage 2 2005 WRX
Cobbtuning.com"
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#5 Old 12-23-2009, 05:11 AM
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Quote:
Originally Posted by ratfink View Post
Ram air does NOTHING for a turbo car.
WHY does everyone say this ? Explain your reasons ....

Paul
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#6 Old 12-23-2009, 09:23 AM
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Ram air intakes usually pull in warmer air from the engine bay - even to some extent with a heat shield. Cold air intakes pulls in cooler air from the fender area. Cooler air can be compressed more/easier than warmer air when going through the same system. Your turbo system's main objective is to compress air and force more into your engine. Therefore, the cooler the air you start with, the better the system will function and the more power you are likely to make.

Those are the basics. But technically, a ram air intake system will breathe a little easier than the restrictive stock intake system (in most cases), so a ram air system is better than nothing just in terms of being able to allow more air into the system.

John
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#7 Old 12-23-2009, 09:45 AM
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I dunno... The difference in IAT's between a ram air and CAI I feel should be negligable... The air is still going through a hot turbo after it gets sucked in... Maybe NA cars there is a bigger difference but FI should be a lot smaller margin. I'm not an expert though and for all I know the cooler air before the turbo does make a difference. Somebody needs to run an IAT test with stock airbox, CAI, and ram air setups and see if there is any noticeable difference in temps.

-Chris
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#8 Old 12-23-2009, 01:30 PM
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I know on the Suby system (because no one really makes a decent airbox) The stocker is good for some time BUT as a blanket statement it's a little far fetched. A guy on nastysock did an IAT test a while back.... I can't get on there from work (go figure).

Paul
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#9 Old 12-24-2009, 08:45 AM
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For the record I was speaking of a traditional "ram air" which consisted of a scoop and a directed intake snorkel to attempt to "ram" air into the motor. This is the type I was saying would be of no benefit to a turbo car. A "short ram" (I don't know why they call them that) may offer some benefits on some vehicles. Especially in the sound department.

Brad

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#10 Old 12-24-2009, 09:28 AM
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Sound ? I don't care for that part (though some do)

I picked up 11 horse with an injen SRI and a custom box off a protune on my 07sti a while back. Picked up nicer #'s on my MS3 with a SRI and box.

We don't get enuff water/rain down here but when it rains it floods (reason I say nahh to the CAI's) Thanks for explaining.

Paul
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#11 Old 12-24-2009, 09:29 AM
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This equals Speed...Hot...Nasty...Badass Speed!!! haha now thats Ram Air!!
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#12 Old 12-24-2009, 11:22 AM
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^^ Yeah, if they could only make it go...

HA

Paul
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