Universal Fit Cold Air Box - [BINARY]
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From: Redmond - Lake Tapps ,WA
Cant wait for mine. 
Awesome...sweet...an "engineered" product...totally cool guy...
Wait...
What does being an engineer have to do with building a sheetmetal box?
Now, design it to actually ultilize a high pressure area of the car and prove you can gain positive relative pressure at the turbo inlet across some meaningful RPM range and I'll be impressed with your engineering skill. That's what I'm after this summer for my own project.
Otherwise, you are just being scientific about your methods and that I still applaud. Good work, hope to see more of your progress.
<- Mechanical Engineer also
Wait...
What does being an engineer have to do with building a sheetmetal box?
Now, design it to actually ultilize a high pressure area of the car and prove you can gain positive relative pressure at the turbo inlet across some meaningful RPM range and I'll be impressed with your engineering skill. That's what I'm after this summer for my own project.
Otherwise, you are just being scientific about your methods and that I still applaud. Good work, hope to see more of your progress.
<- Mechanical Engineer also
Awesome...sweet...an "engineered" product...totally cool guy...
Wait...
What does being an engineer have to do with building a sheetmetal box?
Now, design it to actually ultilize a high pressure area of the car and prove you can gain positive relative pressure at the turbo inlet across some meaningful RPM range and I'll be impressed with your engineering skill. That's what I'm after this summer for my own project.
Otherwise, you are just being scientific about your methods and that I still applaud. Good work, hope to see more of your progress.
<- Mechanical Engineer also
Wait...
What does being an engineer have to do with building a sheetmetal box?
Now, design it to actually ultilize a high pressure area of the car and prove you can gain positive relative pressure at the turbo inlet across some meaningful RPM range and I'll be impressed with your engineering skill. That's what I'm after this summer for my own project.
Otherwise, you are just being scientific about your methods and that I still applaud. Good work, hope to see more of your progress.
<- Mechanical Engineer also
I smell a challenge!
I'm in on this when its ready
Nah, no challenge.
I was actually just giving him a little bit of a hard time. I've got zero interest in making anything for retail. I am interested in trying to build a positive pressure cold air intake system though.
I did a nearly sealed box with 5" dryer duct setup on my last car. Worked VERY well but I never saw any kind of positive relative pressure readings at the MAF. The benefit of these cold air systems was in the consistency of power delivery.
If you catch the car before the engine bay gets heat soaked, a cold air intake does very little for power. Sit at a light for a few minutes after getting off the freeway though and the cold air intake will make a very pronounced difference.
I noted similar readings to what has been seen in this thread. Near ambient conditions under almost all conditions when using the shield. Hot intake temps after setting without the shield. Temps slowly fall once speed picks up without the shield but start pretty high to begin with.
I was actually just giving him a little bit of a hard time. I've got zero interest in making anything for retail. I am interested in trying to build a positive pressure cold air intake system though.
I did a nearly sealed box with 5" dryer duct setup on my last car. Worked VERY well but I never saw any kind of positive relative pressure readings at the MAF. The benefit of these cold air systems was in the consistency of power delivery.
If you catch the car before the engine bay gets heat soaked, a cold air intake does very little for power. Sit at a light for a few minutes after getting off the freeway though and the cold air intake will make a very pronounced difference.
I noted similar readings to what has been seen in this thread. Near ambient conditions under almost all conditions when using the shield. Hot intake temps after setting without the shield. Temps slowly fall once speed picks up without the shield but start pretty high to begin with.
Thread Starter
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From: Redmond - Lake Tapps ,WA
Nah, no challenge.
I was actually just giving him a little bit of a hard time. I've got zero interest in making anything for retail. I am interested in trying to build a positive pressure cold air intake system though.
I did a nearly sealed box with 5" dryer duct setup on my last car. Worked VERY well but I never saw any kind of positive relative pressure readings at the MAF. The benefit of these cold air systems was in the consistency of power delivery.
If you catch the car before the engine bay gets heat soaked, a cold air intake does very little for power. Sit at a light for a few minutes after getting off the freeway though and the cold air intake will make a very pronounced difference.
I noted similar readings to what has been seen in this thread. Near ambient conditions under almost all conditions when using the shield. Hot intake temps after setting without the shield. Temps slowly fall once speed picks up without the shield but start pretty high to begin with.
I was actually just giving him a little bit of a hard time. I've got zero interest in making anything for retail. I am interested in trying to build a positive pressure cold air intake system though.
I did a nearly sealed box with 5" dryer duct setup on my last car. Worked VERY well but I never saw any kind of positive relative pressure readings at the MAF. The benefit of these cold air systems was in the consistency of power delivery.
If you catch the car before the engine bay gets heat soaked, a cold air intake does very little for power. Sit at a light for a few minutes after getting off the freeway though and the cold air intake will make a very pronounced difference.
I noted similar readings to what has been seen in this thread. Near ambient conditions under almost all conditions when using the shield. Hot intake temps after setting without the shield. Temps slowly fall once speed picks up without the shield but start pretty high to begin with.
First I want to nail down some data on temperature differential, but I could play around with pressure as well.
Creating a sealed ram-air system is do-able but would increase the cost of things quite a bit. You'd want proper velocity stack inlets for the bumper as well as sealing off all the unused bumper openings. Then the ducting would need to be built right into the filter to avoid pressure drops. I don't think that many people would justify the huge jump in price for a ram-air system over the cold airbox. I'm not so sure the ram air effect would even be a benefit. The speeds required to generate any real pressure are high enough to have the engine nice a loaded and the turbo spools past ambient pressure almost instantly. But it's a cool experiment to try in my spare time perhaps.
So if you want to get air in with ACD why not just use what came on the car?!
Put the little top feed air scoop in that goes to the stock air box and feed it into a hole in the box.
Put the little top feed air scoop in that goes to the stock air box and feed it into a hole in the box.
Suck it Mike
First I want to nail down some data on temperature differential, but I could play around with pressure as well.
Creating a sealed ram-air system is do-able but would increase the cost of things quite a bit. You'd want proper velocity stack inlets for the bumper as well as sealing off all the unused bumper openings. Then the ducting would need to be built right into the filter to avoid pressure drops. I don't think that many people would justify the huge jump in price for a ram-air system over the cold airbox. I'm not so sure the ram air effect would even be a benefit. The speeds required to generate any real pressure are high enough to have the engine nice a loaded and the turbo spools past ambient pressure almost instantly. But it's a cool experiment to try in my spare time perhaps.
First I want to nail down some data on temperature differential, but I could play around with pressure as well.
Creating a sealed ram-air system is do-able but would increase the cost of things quite a bit. You'd want proper velocity stack inlets for the bumper as well as sealing off all the unused bumper openings. Then the ducting would need to be built right into the filter to avoid pressure drops. I don't think that many people would justify the huge jump in price for a ram-air system over the cold airbox. I'm not so sure the ram air effect would even be a benefit. The speeds required to generate any real pressure are high enough to have the engine nice a loaded and the turbo spools past ambient pressure almost instantly. But it's a cool experiment to try in my spare time perhaps.
Jared, you find any time yet to brainstorm ideas of what you are looking to do for th ACD guys yet? Cant wait to see one and get one
I fear you must have missed some classes during engineering school! Apexi already has a unit very similar why are you not using the number one rule in engineering "reverse engineering"?
I understand what your intent here, however I wonder if you might not save yourself some time if you did have an apex unit to compare to. Just my two cents, I am a fellow engineer and love to see people putting there skills out there to solve real world problems!
definatly intersted when it's complete.
I understand what your intent here, however I wonder if you might not save yourself some time if you did have an apex unit to compare to. Just my two cents, I am a fellow engineer and love to see people putting there skills out there to solve real world problems!
definatly intersted when it's complete.
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From: Redmond - Lake Tapps ,WA
I know about the Apexi box. It has a major problem for most evo owners... It only works with their intake.
The challenge is to make an airbox that works with as many intake/intercooler pipe combinations as possible. AND for cars with and without ACD.
I'm getting ready to build the 2nd prototype.
The challenge is to make an airbox that works with as many intake/intercooler pipe combinations as possible. AND for cars with and without ACD.
I'm getting ready to build the 2nd prototype.
With regards to the ACD I have done some work and I figured I should let you know.
I was able to run a small diameter pipe from the bumper duct up to the air filter. I think the diameter is around 2.5-3" but I don't know for sure. It is actually one of those air intake ducts that you can buy from autozone. It was a bit tricky and I had to bend the bracket that holds the ACD reservoir back a bit but I managed to make it fit.
It was also a bit tricky to actaully get space in the bumper, the ACD pump sits so close to the bumper that its tuff to angle the duct in a way that it gets enough air. I would up playing with different angles and then using a leaf blower to try and feel which was resulting in more air being blown onto the filter.
Just a quick question - when you did you testing and you show the number of with a box VS. without a box, they are both with the air hose, correct?
I was able to run a small diameter pipe from the bumper duct up to the air filter. I think the diameter is around 2.5-3" but I don't know for sure. It is actually one of those air intake ducts that you can buy from autozone. It was a bit tricky and I had to bend the bracket that holds the ACD reservoir back a bit but I managed to make it fit.
It was also a bit tricky to actaully get space in the bumper, the ACD pump sits so close to the bumper that its tuff to angle the duct in a way that it gets enough air. I would up playing with different angles and then using a leaf blower to try and feel which was resulting in more air being blown onto the filter.
Just a quick question - when you did you testing and you show the number of with a box VS. without a box, they are both with the air hose, correct?