On the topic of getting as much velocity pressure (air speed) in the air box as possible...
I'm wondering....if you can punch these even further forward and through the grill (a 2nd hand one maybe) in some elegant way.
I'm talking to fabtech re their setup ATM
FTP Performance Mercedes Benz AMG Cold AIR Intake System CL55 E55 SL55 S55 CLS55 | eBay

 

I really don't see any benefit from this....I have ran open tubes and with filters with no change....

 

I turned up my hearing aid.. and it sounds awesome under the hood now!

So you see no advantage to having two 3" tubes sucking in air (same operating air intake temps as an OEM setup per Torque Pro) vrs the OEM and restricted from the start?

 

Nope, unless you were creating vacuum under wot in the air boxes which wouldn't be the case even in the SRT. Factory airboxes on some cars do run into that problem, my old S60R ran into that issue after bolt-ons and extra 8lbs of boost over stock, a vendor sold a kit that put an extra hole/intake route in the stock airbox that normalized the pressure at wot and gave or I guess returned about 14whp back toward the redline.. getting the same kit on a stock s60r netted 0hp gains even though it could breathe so much better. (same intake temps as well)

 

I did a quick search for info -
Found a guy who had done some "rigorous" testing in his Miata (coincidently) and compared different filters by hooking up a differential pressure gauge to his inlet manifold.
Now I'm not sure this is a sound as NW_Rob's flow v 15"WG testing of airboxes, but indicative to say the least....
This guy found his stock air box without a filter to even burn off -5"WG at 6500rpm even without a filter.

Other testing (I've subtracted the 5"WG)...
K&N..................-1.3"WG
Paper................-1.8"WG
RacingBeatFoam...-1.5"WG

1psi = 27"WG

So in summary the filter steals about 0.06psi.
I'm very suprised
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To put that into perspective, NW_Robs data at 15"WG for various DCAI and CAI and stock intakes etc. when normalised out to our WOT 6000rpm 90%VE and a 65mm pulley show....
Setup......cfm......airbox......ManiP......rwhp
DCAI......706.....-13"WG.....19.2psi.....330
CAI........702.....-19"WG.....19.0psi.....328
Stock......689.....-36"WG.....18.4psi.....322
So there's obviously a lot more drop in our situation than for the miata's

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Scoops.......
there's a good intro to scoops...here....
Race Car Book
in summary they produce the equation.....
vehicle MPH = engine CFM x 1.64 / scoop area (square inches)
which is the balance point where the scoop goes from being negative prs to positive prs 'cause its capturing more air than the engine can use.
You'd want this around 55mph hey...so at WOT (700cfm) and 55mph the scoop area should be 20 in2

Having said that....
I found this here
The formula for theoretical maximum ram pressure ('velocity head') is:
p = pv²/288g, where
p is the velocity head in psi
Þ is air density in lb./cu. ft.
v is velocity in ft/sec. (88 ft./sec. = 60 mph)
g is acceleration due to gravity, 32.2 ft./sec/sec. on our home planet
So for example, at 150 mph (220 ft./sec.):
p = (0.076 x 220²)/(288 x 32.2) = 0.4 psi (~11 " H2O), or about a 2.7% potential power increase

but when you take that back 50mph.....
you get 0.04psi....so not very much until you're over 100mph (0.2psi) or a coupl'a rwhp

 

And here I thought I was just grabbing a little more cooler outside air to feed the beast..

 

Ram air has been chewed over a lot on this forum. See this thread and read the PDF in the first post.
Ram Air, Fact or Fiction.

 

Is it at all possible that you're overthinking all of this? Not sure who you're posting all these facts and figures for; I certainly know it's not the majority of us. mca=b (more cool air=better)

 

180...Very interesting, as Woody says - question everything.

dinasrt....apologies, but I've never been considered "in the majority" - in case you hadnt already guessed.

 

dinasrt....apologies, but I've never been considered "in the majority" - in case you hadnt already guessed.[/QUOTE]

Don't worry, I'm sure that most MB owners feel the same way as you.

 

bada bing!

 

came across this....

another variant

 

I like the price of mine.. So I won't even ask.. lol.

 

Diddo !!