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Modding the stock Airbox for turbo application

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Old 06-22-2018, 12:32 PM
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Originally Posted by hatrickstu
Are you limiting the power of the car because of stock internals or fuel?
I’m happy with my 530whp on e85. I’m just trying to lower air temps instead of having a hot air intake
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Old 06-22-2018, 12:33 PM
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Originally Posted by redboosteds2k
I dont doubt it will benefit. Im just curious what it will actually do. if it works i may duplicate this.
do u have a top mount manifold as well? I think with turbo application one would see up to 30-40 degrees difference from outside ambient temp vs red hot engine temp after some major pulls I would need to measure the temp difference when the mod is done
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Old 06-22-2018, 01:30 PM
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Originally Posted by nguyen365

do u have a top mount manifold as well? I think with turbo application one would see up to 30-40 degrees difference from outside ambient temp vs red hot engine temp after some major pulls I would need to measure the temp difference when the mod is done
I also have a top mount though the turbo sits forward more.
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Old 06-22-2018, 07:27 PM
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I wouldn’t mind buying one of the ptuning air boxes they are expensive and probably don’t sell them separately
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Old 06-22-2018, 07:29 PM
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Originally Posted by nguyen365
Recently I watched the hot air box on engineering explained and found that with the engine warm there is over 20 degrees difference from the outside temp vs the air that’s under the engine bay. So I thought about modding my Airbox so it will isolate the hot engine air from the cool air that’s being sucked into my turbo
I measured the air temp coming off the radiator. Just highway cruising, so low power. Ambient air temp ~75F. Air coming off the radiator ~120F, so 45F temp gain.

Project S2000: Part 23. Testing Air Temps Through Coolers and Vents

The hotter the air getting sucked into the turbo, the more compressor power is required. More compressor required = more turbine power required = more engine back pressure = less power. And intake mani temp will be higher too also reducing power.

Compressor Efficiency and More
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Old 06-23-2018, 07:42 AM
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Mic drop and walks away lol.
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Old 06-23-2018, 08:00 AM
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Have you considered using aluminum? It would open up virtually any option size and you could rivet it together.
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Old 06-23-2018, 08:07 AM
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Originally Posted by nguyen365
https://youtu.be/8tSNjCVGxtE

watch from engineering explained 20 degrees cooler

i think with turbo application it’ll even benefit 2 fold. Since the turbo manifold and the hot side is like a furnish heater increasing engine temp even more And super chargers don’t throw out that much heat
He ran a pretty good experiment, not too dissimilar to mine where I measured air temps around the engine bay with my vented hood. But his conclusion is not 100% correct; he thinks the intake is sucking hot air coming from the exhaust manifold, but it's much more from hot air coming off the radiator. It's probably more like 95% off radiator, 5% maybe getting sucked back from the header. I don't see air (in my head visualization) recirculating in the engine bay from the rear to the front while driving.
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Old 06-23-2018, 09:50 AM
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Originally Posted by RacerXI
Have you considered using aluminum? It would open up virtually any option size and you could rivet it together.
yes maybe in the future aluminum’s the way to go
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Old 06-25-2018, 08:14 PM
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How will the cold air enter this box? There needs to be a large open section of the front bumper located right where the H badge lives. The large grille should be ducted up and over the radiator frame and into a sealed insulated box where the intake filter lives.
Stainless Steel filters have also proved to be the best for making more power.
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