[Imperator]

Originally Posted by tibra1

The Simota filter has much more surface area than the OE filter beacuse the pleats are deeper..and the cone is round tapered..there is no way a panel filter has more surface area.and the OE is paper..super restrictive....here is the k&n equivalent of the simota.

Attachment 533708


Just by looking at pic u can see how much more surface area there is but if u wanna go thru the calcs..

Base Outside Diameter: 7.5 in (191 mm)
Flange Inside Diameter: 6 in (152 mm)
Flange Length: 1 in (25 mm)
Height: 3 in (76 mm)
Top Outside Diameter: 5.875 in (149 mm

Its not as big as DCI..but keep in mind this a forced induction car surface area of cones is not as critical as on an N/A car..and you dont have heat issues as w the DCI..

That cotton gauze filter does NOT have deeper pleats than the OEM filter. The typical K&N wire-reinforced cotton gauze filter material is 1.125" deep. The stock paper filter is 2" deep. Also, paper media on its own is not more restrictive than oiled gauze filters until they are both loaded with dirt.

Based on those measurements, the Simota filter has a total surface area of 70.65" (23.55" cir. x 3" H). The stock panel filter has a total surface area of 169" (roughly 13" H x 13" W).

The Simota intake uses the same OEM intake tract with a different style of filter. Based on filter media measurements alone, you're better off just using a K&N drop-in panel in the stock airbox.

[tibra1]

Originally Posted by Imperator

That cotton gauze filter does NOT have deeper pleats than the OEM filter. The typical K&N wire-reinforced cotton gauze filter material is 1.125" deep. The stock paper filter is 2" deep. Also, paper media on its own is not more restrictive than oiled gauze filters until they are both loaded with dirt.

Based on those measurements, the Simota filter has a total surface area of 70.65" (23.55" cir. x 3" H). The stock panel filter has a total surface area of 169" (roughly 13" H x 13" W).

The Simota intake uses the same OEM intake tract with a different style of filter. Based on filter media measurements alone, you're better off just using a K&N drop-in panel in the stock airbox.

LOL...Uhhhh no ..u dont measure area which is 2 dimensional u measure volume which is 3 dimensional.

and the stock dimensions of the OEM filter are exactly 9.5"W X 10"L X.75"H = 71.5 cubic inches

U can find the volume of a cone using this calculator

http://www.abe.msstate.edu/~fto/tools/vol/cone.html

Using that tool and the following measurements

Top Outside Diameter 5.875 /2 = Radius 2.9375
Base Outside Diameter 7.5 /2 = Radius 3.75
Height 3

Gets you 105.89 cubic inches

The K&N filter is larger by approx 34 cubic inches then the OE filter and just so you are aware the Simota has deeper pleats then the K&N which means its has an even larger volume than this..Its made of polyurethean w steel mesh backing polurthean is more durable and can with stand more heat and wont deform like than cotton gauze

Im sure u have seen how some aftermarket filters will warp and deform over time

[Bagelfast]

I have a feeling at the end of the day, DCI with air scoops probably are the best bet.
Just went back to the Stock air box with drop in filter, and the only thing i can really say i feel is maybe better and snappier throttle response? maybe. Cant tell a different, but using the JB4 im montoring my daily IAT with the stock airbox so i can compare them with my DCI setup. But i really think intake scoops help bring cooler air faster to the DCI to lower IAT's, will monitor IAT with DCI and DCI+scoops aswell.

[tibra1]

Originally Posted by 1LUMI335

I have a feeling at the end of the day, DCI with air scoops probably are the best bet.
Just went back to the Stock air box with drop in filter, and the only thing i can really say i feel is maybe better and snappier throttle response? maybe. Cant tell a different, but using the JB4 im montoring my daily IAT with the stock airbox so i can compare them with my DCI setup. But i really think intake scoops help bring cooler air faster to the DCI to lower IAT's, will monitor IAT with DCI and DCI+scoops aswell.

Perhaps scoops will help, but i cant see it unless u r at high speeds..DCI are better if you are constantly on the move ..but on the street some type of CAI is in order to help w stop and go heat soak and recovery..the stock box is good for that.. the problem is w the restriction it presents

[Imperator]

Originally Posted by tibra1

LOL...Uhhhh no ..u dont measure area which is 2 dimensional u measure volume which is 3 dimensional.

and the stock dimensions of the OEM filter are exactly 9.5"W X 10"L X.75"H = 71.5 cubic inches

I used filter area to keep the comparison simple as the two media types are not equal. Using total volume of a cone is generous to the Simota filter as the exposed filter area is only around the circumference-- the "top of the cone" is covered by a reinforced metal hat. Essentially, the Simota filter is using a 23.5"L X 3"H strip of filter media.

I'll have to measure my stock panel filter-- it certainly seems deeper than 3/4" thick.

[tibra1]

I am holding the stock filter in my hand with a tape measure.. as we are posting..my measurements are exact..its cool..i agree that the Simota is no where near as big as DCI obviously..but it is bigger than OE..this i have no doubt.

The measurement of the diameter top and bottom doesnt affect the calc
The 3 inch height measurement is what matters b/c that is the exact measure of the filter media..the H measurment from top of metal hat to base is bigger than 3 inches so my calc only reflects media filter H

Circumference is not at issue here..we r talking about useful volume of the filter.

[Bash]

Another intake war..lol
As it was said before the OP has a meth kit, which basically means approx 17 PSI and cool IATs, so its a no brainer....DCI.

I personally run K&N drop in, as im stock IC and no meth, with a lot of stop and go traffic in a hot and humid country.

[Tuner1984]

DCIs are more or less recommened for boost levels above 15 psi. That's when you will see the true potential of them. I just uninstalled my DCI and put in my stock airbox with k&N drop in. My IAT temps are about 10 degrees cooler with the stock airbox vs the dci. Current mods are Cobb, Helix IC, and forged DVs.

[tunachris]

Has anyone tried hood scoops and a "ram-air" type of set-up?

[Bagelfast]

Originally Posted by tibra1

Perhaps scoops will help, but i cant see it unless u r at high speeds..DCI are better if you are constantly on the move ..but on the street some type of CAI is in order to help w stop and go heat soak and recovery..the stock box is good for that.. the problem is w the restriction it presents

Anything at or above 20mph will bring some nice ambient air to the DCI area. scoops pick up a good amount of air.

I cant wait to throw my DCI and compare the IAT's during my daily driving compared to the stock box.

Try opening up your oem airbox and putting ur hand on the filter, my filter and airbox is HOT! After a daily drive. This is why i am really interested to see how a DCI w/ scoops comapre to the oem box. As my butt dyno isnt feeling much.

We shall see, and anyone with a JB4 can do this comparison aswell, just set the oil gauge to read IAT via the steering wheel controls.


BTW, im not sure if i missed it or not, where is the proof that DCI helps power, after the restrictive airbox reaches its peak flow at 15psi?

[Syndicategt]

Originally Posted by 1LUMI335

BTW, im not sure if i missed it or not, where is the proof that DCI helps power, after the restrictive airbox reaches its peak flow at 15psi?

There has been zero "proof" of anything in the 4 pages of this thread. Just speculations and theories. Until someone posts some datalogs, dyno's, and real world 60-130 tests (Mr 5 style), it's impossible to draw a conclusion on anything being said here.

[Stucks]

iirc, mr 5's data on the intakes showed that the stock intake and dci were similar to each other with only a couple of differences, one of these differences being that the dci was easier on the wastegates and another being that the dci iat's were usually slightly higher.

[tibra1]

Originally Posted by Bash

Another intake war..lol
.

No war here..lol i am just saying the simota filter is larger than the OE panel filter..which it is..

The debate of what intake to run will go on for next century..so just get what u like. They are almost equal anyways

[tibra1]

Originally Posted by Syndicategt

There has been zero "proof" of anything in the 4 pages of this thread. Just speculations and theories. Until someone posts some datalogs, dyno's, and real world 60-130 tests (Mr 5 style), it's impossible to draw a conclusion on anything being said here.

And you will continue to get zero proof as there is no standaridized testing for an intakes performance..its all speculation..and test results are easily skewed..so as I said..pick an intake u like or keep stock box (if u dont care about the restriction it presents).