Originally Posted by Noize

While you did a good job curing the idle MAF issue on an exposed WAI, you are highly restricting injestion opportunity for your conical filter due to the limited airflow potential of the stock airbox.

I'd lay money this mod will flow slightly less than a K&N drop in filter, which can be easily proven with a turbo that will outflow either setup, a competent Ecuflash tuner, and a dyno.

You'll have to do more than swap and compare runs, because the tune will be optimized for whatever goes first. Custom tunes on both will show the truth.

I haven't seen this on a 4B11 yet, but I've seen something similar on a 4G63 get whipped on the dyno by a stock airbox and a K&N drop in, hence my opinion.

Originally Posted by bouncintiga

it's all well and good to debate whether it will make power or not, but i think the point of the mod is to keep the stealth look, and it's something different.

I think this will make more power than stock and if that's all he wants then that's good enough for him. I don't think it will make that much more power than stock because it's still on stock piping which is the main restriction left once the filter panel is changed to a cone type. but it's just a different mod and could probably be done for less than a $50 panel filter.

Originally Posted by strocse

I think the cure for the restrictive box is to drill 1/4 in holes on the right side (non engine side) this will make the box non-restrictive.

my only problem is the small size of the cone filter, back to my point if we stretched a k&n drop-in out and stretched that k&ncone out they would be similar surface area. why not just put a k&n drop-in and be done

now cut a big hole in the back of the stock box and add a monter K&N filter you would have something

Originally Posted by ZWingerRyRy

Its a 2inch flange meaning length of the flange. The inside diameter of the flange is 2.75", the maf pipe inside diameter is 2.5", the other side is 3". A full 3" maf pipe with 3" inside diameter flange would benefit. A 3" inside flange diameter going over a 2.5" maf inside diameter would make no difference as the maf housing would be restricting it anyways. Only company that makes a full 3" intake is AMS to my knowledge, but ill save my $350+.