Jut Got E-mail Fom INJEN - CAI for MSP Finally out !!!

OK, I'm going to show my absolute ignorance here... I was previously under the impression that a cold air intake actually chilled the incoming air. Since I have come to understand that that simply isnt true I'm led to question why it is not possible.

Couldn't something like wrapping the intake in copper tubing and running freeon through it work? I must admit I know less about a/c then I do about engines but could you tap into the a/c system?

Then again, supposing you COULD do something like that... would it be better to wrap the pipe between the turbo and the engine?

OK.. so it is probably obscenely stupid.. or then again.. it may be a revolution... flame away

Vapor
 
You could do that Vapor, but it's all just gonna get heated up again in the turbo. If you go through all that trouble, it's better to just put cooling on the intercooler. That'll really help decrease the charge temp...that's an interesting idea, though....hmm
:D
 
I believe that if the internal temperature in the turbo is say 500 degrees (just an example) and the incoming air is 50 degrees, the intake charge is 550 degrees. If the incoming air is 25 degrees, the intake charge is 525. Temperature is relative. The turbo will only heat up the air a relative amount. I believe that a CAI would in fact cool the intake charge. Maybe we shall put in an air temp sensor in the pipe before the TB and see.

Britt
 
Oh...I'm not saying that the intake wouldn't cool the charge. Sorry about that...I think that it would just be more worthwhile to cool the charge after it's been compressed. The initial charge from the CAI will hit the turbo, be compressed & heated, etc, then get sent through the intercooler and to the motor. Decreasing the initial intake air should (in theory) make the turbo more efficient (especially if running higher boost applications), but I think that cooling the air further after the turbo, at the intercooler, will provide that cold air to the combustion chamber. I'm sure Joe (kwiktsi) can answer this better than I...but it sounds right. Call me on BS if it's not...I'm still learning! :D
 
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servoeyes said:
Oh...I'm not saying that the intake wouldn't cool the charge. Sorry about that...I think that it would just be more worthwhile to cool the charge after it's been compressed. The initial charge from the CAI will hit the turbo, be compressed & heated, etc, then get sent through the intercooler and to the motor. Decreasing the initial intake air should (in theory) make the turbo more efficient (especially if running higher boost applications), but I think that cooling the air further after the turbo, at the intercooler, will provide that cold air to the combustion chamber. I'm sure Joe (kwiktsi) can answer this better than I...but it sounds right. Call me on BS if it's not...I'm still learning! :D

I am not answering anymore CAI questions. If you want it, get it- more power to you. If not, don't- more power to you. I know what I am doing with my car and I know that what I am doing will work and be worth every $$$ spent. That's all I care about. If you guys want help, you know I'll help you along too.
Joe
 
servoeyes said:
Oh...I'm not saying that the intake wouldn't cool the charge. Sorry about that...I think that it would just be more worthwhile to cool the charge after it's been compressed. The initial charge from the CAI will hit the turbo, be compressed & heated, etc, then get sent through the intercooler and to the motor. Decreasing the initial intake air should (in theory) make the turbo more efficient (especially if running higher boost applications), but I think that cooling the air further after the turbo, at the intercooler, will provide that cold air to the combustion chamber. I'm sure Joe (kwiktsi) can answer this better than I...but it sounds right. Call me on BS if it's not...I'm still learning! :D
servo this is a good post.
first off by keeping cooler air coming into the turbo you increase the efficiency of the compressor. no matter whether it is a small turbo or not. the fact remains that the motor will benifit more from an intake charge that is cooler than the air thru the compressor. i have built many systems where we incorporate a form of CAI with "shop made" piping and a filter element located out of the engine bay. then thru the compressor to an air to air intercooler. the outlet is then routed to the throttle body like any other setup. the difference is that before it gets to the throttle body it will pass a chamber that contains ice water. we used this system for the track days. when running every day on the street we use N/A intercooler oprations and at the track we filled it with ice water. on the proteges we would just relocate the battery to the hatch and you had plenty of room to mount a tank to hold the water.

but anyway my point is that the charge going into the manifold is priority. if you want an efficient system then a GOOD water injection system in the manifold is a great investment for upper boost levels where you want to keep a denser and cooler mixture since you are running out of compressor efficiency
 

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