This is gonna sound stupid...

[brngrhd]

i agree with amx if you start with cooler air you end up with cooler air. i agree with tommy and sakigt bigger is better cools more flows more. ic sprayer is good too. i agree with rolo with blocking heat from the head to intake. anytime you get or keep heat out of the system it is good be it with an intake shield, bigger intercoller, sprayer, or cooler air comming in it all helps.

[Jason_L]

I've quasi-debated this a few times, so I wont' go into great detail. But the turbo heats that air to several hundred degrees.. I just don't see many CAI's having any noticable effect..
while moving, a short ram with the weather strip mod (or even add a cold air duct into the engine compartment in general) is most likely going to be very near the same temp by the time it hits the throttle body as a CAI intake.. and the short ram should flow more since it generaly has fewer bends. I say save a lot of money and just get a good pipe like AMX's and bolt on a good free flow filter.. then just duct cool air into the engine bay if you feel up to it

[mich_132003]

quote:Originally posted by sakigt

It wouldnt do a lick of good...

This is why a "cold" air intake isnt very helpful on a GT. Successful cold air intakes are just that because they incorporate some form of "ram air."

When air flows from your box it goes into the the turbine, which is extremely hot. The intercooler's job is to cool this air as much as possible before it reaches the cylinders.

Now Im not saying 60 degree air isnt better than 80 degree air, but Id rather have that cold air going into the engine than the turbo.

I don't disagree with anything u are all saying but lets not forget that a CAI also delivers more air to the Turbo/Engine and more air = better performance. Air temp is only one aspect of air induction.[|)]

[Jason_L]

more air vs stock.. i doubt they out flow the short rams though (however, if there is a ram effect as sakigt mentioned, this might be debatable), and they're cheaper.

[03baggedturbo]

Talking to a lot of turbo guys our intercooler is a nice size.. You can go too big on intercooler where it is not efficient.. I don't want to get all technical on you guys but of the week links the intercooler is not one on the PT.. You can buy an intercooler sprayer for really cheap if you want..

But the original question was can you tap into the uppercharge piping to get colder air into the airbox.. For that you have to look at the airpath that the air goes..

From the airbox or intake forced through the turbo around through the intercooler (to cool the air) then up the uppercharge piping to the throttle body.. if you took some of the air out of the uppercharge piping back to the airbox or intake then you would be taking the air that is about to go into the throttle body (in the engine) and resurculates it back at the start of the air system..

You could use an ice box for the track like some turbo cars where it is cooled by an ice box in the system but for every day driving this wouldn't be practical.. ADAM

[crazyjoe]

quote:Originally posted by Jason_L

I've quasi-debated this a few times, so I wont' go into great detail. But the turbo heats that air to several hundred degrees..

I have seen you type this in other threads as well, and I'll tell you it just doesn't make sense. If this were the case, you wouldn't need a spark plug, you could just put a turbocharger on the car, bypass the intercooler, and the hot air would ignite the gasoline as it entered the combustion chamber. I just don't think it's true. If it was, you sure as heck couldn't use plastic pipes for the intercooler, as they would melt with air several hundred degrees travelling through them and into the intercooler.

The turbocharger fins and compression heat the air slightly, but certainly not to several hundred degrees.