Running without the airbox lid
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Joined: Jun 2006
Posts: 41
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From: Butler, PA
Running without the airbox lid
Im pretty new to the evos and turbo cars and was wondering does anyone run there EVO without the lid for the airbox? Do you think it would make it run better or not? (give it alittle more HP or pretty much just make it louder?)
Best bet is get an intake.
It wouldn't hurt much other than the fact that you'd be ingesting a little more hot air vs the cooler air that is snorkeled in from the outside of the engine bay. Also, the stock airbox directs even more airflow once you are actually driving (which is the whole point of owning a vehicle). The stock airbox was designed for with performance in mind... we are talking about Japanese performance engineers afterall, not Buick or Ford engineers.
If you look at top performance car manufacturers like BMW, Porsche, Mitsu, Ferarri, etc. they use some sort of ram air design concept for their airboxes so I would figure that they know what they are doing. The idea is to get the most cool (i.e. dense) air to start the whole combustion process and the ambient air outside of the engine bay is better than the less dense and turbulent air that's inside the engine compartment.
That said, if you look at the stock airboxes of some cheap mass produced cars you'll see that the intakes are a source of restriction... as in the incoming air has to be almost sucked through an airbox with a small opening. I don't think this is the case for our Evo's airbox. It may not be the most efficient at 0 mph of airspeed, but it is definately more efficient at getting cooler air directed to the air filter once the forward airspeed picks up.
I'm pretty sure you already know this.
If you look at top performance car manufacturers like BMW, Porsche, Mitsu, Ferarri, etc. they use some sort of ram air design concept for their airboxes so I would figure that they know what they are doing. The idea is to get the most cool (i.e. dense) air to start the whole combustion process and the ambient air outside of the engine bay is better than the less dense and turbulent air that's inside the engine compartment.
That said, if you look at the stock airboxes of some cheap mass produced cars you'll see that the intakes are a source of restriction... as in the incoming air has to be almost sucked through an airbox with a small opening. I don't think this is the case for our Evo's airbox. It may not be the most efficient at 0 mph of airspeed, but it is definately more efficient at getting cooler air directed to the air filter once the forward airspeed picks up.
I'm pretty sure you already know this.
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Joined: Dec 2005
Posts: 59
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From: Hobbs, NM
It wouldn't hurt much other than the fact that you'd be ingesting a little more hot air vs the cooler air that is snorkeled in from the outside of the engine bay. Also, the stock airbox directs even more airflow once you are actually driving (which is the whole point of owning a vehicle). The stock airbox was designed for with performance in mind... we are talking about Japanese performance engineers afterall, not Buick or Ford engineers.
If you look at top performance car manufacturers like BMW, Porsche, Mitsu, Ferarri, etc. they use some sort of ram air design concept for their airboxes so I would figure that they know what they are doing. The idea is to get the most cool (i.e. dense) air to start the whole combustion process and the ambient air outside of the engine bay is better than the less dense and turbulent air that's inside the engine compartment.
That said, if you look at the stock airboxes of some cheap mass produced cars you'll see that the intakes are a source of restriction... as in the incoming air has to be almost sucked through an airbox with a small opening. I don't think this is the case for our Evo's airbox. It may not be the most efficient at 0 mph of airspeed, but it is definately more efficient at getting cooler air directed to the air filter once the forward airspeed picks up.
I'm pretty sure you already know this.
If you look at top performance car manufacturers like BMW, Porsche, Mitsu, Ferarri, etc. they use some sort of ram air design concept for their airboxes so I would figure that they know what they are doing. The idea is to get the most cool (i.e. dense) air to start the whole combustion process and the ambient air outside of the engine bay is better than the less dense and turbulent air that's inside the engine compartment.
That said, if you look at the stock airboxes of some cheap mass produced cars you'll see that the intakes are a source of restriction... as in the incoming air has to be almost sucked through an airbox with a small opening. I don't think this is the case for our Evo's airbox. It may not be the most efficient at 0 mph of airspeed, but it is definately more efficient at getting cooler air directed to the air filter once the forward airspeed picks up.
I'm pretty sure you already know this.
