2G Cold air intake project

[deflator]

Air is neither stagnant nor hot there. Air is still able to get there from under the car, also the tire can work as a puller to draw air from that area. I agree with boxing it in though. Also why add so many bends to put it down in there? Why not just box off the area where the filter goes (air flow can be significant behind the headlight ) and make a ducting system that goes through the stock sidemount hole location? It requires zero cutting of the car, maintains a clean look, and will work just as well if not better being able to have less bends.

Its only 1 extra 90" bend from the MAS to the filter. The other bend is ducting I already have which I combined with a cold-air box. I'll just leave it there and use connect it up to the recessed part of a cone filter for a little ram air effect. I think having the filter down in the wheel well is much more ideal since its completely out of the hot engine bay.

 

[wishihadatalon]

Im sea level though, how high up are you in Michigan.

I read that article, and thats were I think I got this info from



I think the temp drop is probably more signifant than directing air, but of course thats just me talking, I have nothing to prove that, but I know temp has a large effect since the compressor will be able to virtually pack more air molecules in since they are denser thus providing a cooler air charge thru your whole intake despite how much they re heat up pre intercooler, there will still be more oxygen in the intake track because once its in there, its in there...

There is some great info there, like supply of pressure and how important it is to have it boxed. Keeping pressure around the filter means that the turbo shouldn't have to work as hard to draw in air.

Either doing anything is better than letting it hang. I saw the same 30 degree drop just by blocking off the rest of the engine bay from the filter.

 

[Black_Bullet]

There is some great info there, like supply of pressure and how important it is to have it boxed. Keeping pressure around the filter means that the turbo shouldn't have to work as hard to draw in air.

Either doing anything is better than letting it hang. I saw the same 30 degree drop just by blocking off the rest of the engine bay from the filter.

But was the temp drop while moving, or while at idle too.
You'd likely heat soak more at idle, and would see hotter IAT's than me
at low rpms when you arent bringin in enough air into the engine bay to keep the heat moving. Also the tests done in that article werent on boosted applications,
I definitly thinkin it "helps" but I dont think it improves airflow enough to measure, especially if filter is still under hood. Now a ram air setup out of the engine bay i think is better. Not argueing with you, just my opinion of the conversation regarding ram air.

I think having the filter down in the wheel well is much more ideal since its completely out of the hot engine bay.

+1

 

[turbo addict]

Ive seen ram air setups tested on bikes and they gained "maybe" 1 psi worth of air pressure if your at highway speeds and if its set up properly... It would make more sense if it was cold air intake pushing denser air into the compressor but still a 6psi gain is ridiculous.
Idk, thats cool that he got good results though from a little experiementing.

A turbo is a compressor, if you look at a turbo's compressor map it works off of a pressure ratio. So if you increase the pressure before the compressor wheel then it will increase at a multiplied rate after the compressor wheel. So if you go from sucking (vacuum) hot air to getting blown cold air, it makes a huge difference. Also a turbo is cyclic, if you have more pressure from the compressor then you have more air going to the motor and more exhaust going out to the turbine to power the compressor wheel. I have seen this many times with different turbo cars. that is why it works so well on a turbocharged car. It is up to you what you do with the info.

And I just got done modding the air filter. All I have left is to make a new intake pipe.
When I get done I will post pics. Just be warned the car is a little rough.

 

[Black_Bullet]

A turbo is a compressor, if you look at a turbo's compressor map it works off of a pressure ratio. So if you increase the pressure before the compressor wheel then it will increase at a multiplied rate after the compressor wheel. So if you go from sucking (vacuum) hot air to getting blown cold air, it makes a huge difference. Also a turbo is cyclic, if you have more pressure from the compressor then you have more air going to the motor and more exhaust going out to the turbine to power the compressor wheel. I have seen this many times with different turbo cars. that is why it works so well on a turbocharged car. It is up to you what you do with the info.

And I just got done modding the air filter. All I have left is to make a new intake pipe.
When I get done I will post pics. Just be warned the car is a little rough.

Yea I just didnt think it was significant, ( maybe unless the turbo was sticking out of the bumper or something like the AMS Evo) but idk your probably right. Thanks for the explanation.

Also, post pics of your setup.

 

[gixrman]

I did a similar setup two years ago and noticed that my filter was getting dirty twice as fast. The cooler air makes a difference.

 

[eder-loco]

What yall thing about this one?

Goes straight into a 4'' pipe into a hole right below the filter.

 

[95tzlgst]

What yall thing about this one?

Goes straight into a 4'' pipe into a hole right below the filter.

I think that looks baller. Do you have any pictures under the hood?

 

[eder-loco]

I think that looks baller. Do you have any pictures under the hood?

Well, my friend is still gonna do me one of those Boxes to block off the hot air. but as soon as he is done i will take more pics.

 

[wishihadatalon]

Well, my friend is still gonna do me one of those Boxes to block off the hot air. but as soon as he is done i will take more pics.

That is very cool. I am planning something like that for my buddies 2g. I probably won't go as far as the rivets and the sheetmetal but I will probably use the stock sidemount ducting to mate up to a 3-4" pipe.

 

[eder-loco]

That is very cool. I am planning something like that for my buddies 2g. I probably won't go as far as the rivets and the sheetmetal but I will probably use the stock sidemount ducting to mate up to a 3-4" pipe.

yea, i wished i still had my. but we just decided to do it this way.
I might paint it black in the future depending on how its gonna look.

btw: that black stuff u see on the pipe. is silicone. we put some of that stuff on top of the hole too. so it would stay in place.
along with a clamp at the buttom hole.

 

[wishihadatalon]

yea, i wished i still had my. but we just decided to do it this way.
I might paint it black in the future depending on how its gonna look.

btw: that black stuff u see on the pipe. is silicone. we put some of that stuff on stop of the hole too. so it would stay in place.
along with a clamp at the buttom hole.

Nice, a local guy mentioned a hole at the bottom of the pipe if you drive in the rain. Should help drain any moisture that builds up in there.

 

[v8s_are_slow]

I jammed a 5" to 4" dryer ducting reducer from home depot into the plastic piece. Mated that with the 4" ducting with a worm gear clamp and drilled holes and screwed the 5" end into the plastic piece. Dryer ducting is great because its so flexible, you can't really go wrong. I spray painted it black after I took this pic

Sure hope those nuts don't decide to come off. I'd be pretty worried about having a setup like this. That's just me though.