Air Intake Engineering

[cjacS3]

Thanks MikTip, that certainly clears up any confusion.

And btw, I'm not at all sure that's a "snow grate"; I've read some speculation that it's intended to diffuse/mix air as it's heading toward the filter.

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I read the same about the "snow grate", also read the reason the air is pulled from the passenger side of grill then routed over to the airbox is to better accelerate the airflow. Many guys dremel out the driver side piece in the grill so air goes directly into the airbox, is this actually good or bad? Also, all of the open or closed aftermarket airboxes eliminate both the "snow grate" difusing and air channeling from passenger side grill to airbox by pulling air directly into filter, is this good or bad? Lots of opinions and very difficult to decide what to do...It seems more airflow would be very beneficial with my S1 tune, kind of thinking leave the factory airbox as-is (with K&N) and replace turbo inlet and pipe and maybe the hose between the airbox and turbo inlet pipe.

[Davethaboss]

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I read the same about the "snow grate", also read the reason the air is pulled from the passenger side of grill then routed over to the airbox is to better accelerate the airflow. Many guys dremel out the driver side piece in the grill so air goes directly into the airbox, is this actually good or bad? Also, all of the open or closed aftermarket airboxes eliminate both the "snow grate" difusing and air channeling from passenger side grill to airbox by pulling air directly into filter, is this good or bad? Lots of opinions and very difficult to decide what to do...It seems more airflow would be very beneficial with my S1 tune, kind of thinking leave the factory airbox as-is (with K&N) and replace turbo inlet and pipe and maybe the hose between the airbox and turbo inlet pipe.

That is exactly what I was thinking about doing. Then one has to wonder what type of air filter do they use, type of hose, type of turbo inlet, etc...

I am thinking about going metal actually. Neuspeed makes something like that. Problem is the hose needs to be compatible with the stock airbox. ECS Tuning might be the only option as everything else I have looked at needs to be used with a different airbox/grate.

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[FlyboyS4]

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I read the same about the "snow grate", also read the reason the air is pulled from the passenger side of grill then routed over to the airbox is to better accelerate the airflow. Many guys dremel out the driver side piece in the grill so air goes directly into the airbox, is this actually good or bad? Also, all of the open or closed aftermarket airboxes eliminate both the "snow grate" difusing and air channeling from passenger side grill to airbox by pulling air directly into filter, is this good or bad? Lots of opinions and very difficult to decide what to do...It seems more airflow would be very beneficial with my S1 tune, kind of thinking leave the factory airbox as-is (with K&N) and replace turbo inlet and pipe and maybe the hose between the airbox and turbo inlet pipe.

I'm going to guess that 99.9% of what you are reading is nothing but speculation from people who are well intentioned but are giving opinions without a basis in facts.