[ThorsHammer]

After reading this http://www.e90post.com/forums/showthread.php?t=149543 I got to thinking. One of the complaints on the Injen intakes is the closed off cone filters, and how they restrict airflow due to their smallish size.

Has anyone tried to retrofit a BMS or BMS-style open-cone onto an Injen dual cone intake? Is it even possible to do without having air leaks or gaps? What about the cone size relative to the Injen location?

I love the look of the Injen, but prefer the performance of the BMS/Vishnu filter design.

[JoeyFiasco]

sounds like a waste man. the injen looks great, but i think you would take away the aesthetics by changing the filters. your choice, form (looks) or function.

[Zeph]

Originally Posted by JoeyFiasco

sounds like a waste man. the injen looks great, but i think you would take away the aesthetics by changing the filters. your choice, form (looks) or function.

I personally prefer function over form, for the most part. I don't think an inverted cone filter is gonna "look worse" than the small crappy plastic end-capped Injen filters. Actually I think such a nice and aggressive intake design needs slightly larger and definitely more aggressive filters.. such as the BMS or even better yet the K&N ones like were used in the DIY thread. Either way if they don't fit then get couplers, also like in the DIY thread or like BMS uses.

[JoeyFiasco]

Originally Posted by Zeph

I personally prefer function over form, for the most part. I don't think an inverted cone filter is gonna "look worse" than the small crappy plastic end-capped Injen filters. Actually I think such a nice and aggressive intake design needs slightly larger and definitely more aggressive filters.. such as the BMS or even better yet the K&N ones like were used in the DIY thread. Either way if they don't fit then get couplers, also like in the DIY thread or like BMS uses.

what i'm saying is that there's no point in spending how ever much the injen intake is to then buy other filters to mod it. why not just do what digital.james did. a lot cheaper, it's function and looks alright.

[ThorsHammer]

There are people who already have Injen though. So I'm just thinking maybe there is some value in the idea.

[Zeph]

I see, my mistake. I wonder if you can order the Injen intake with no filters, and then just buy your own (better) filters and DIY those onto the end. I don't think the Injen design is restrictive, and it is (hopefully) getting a little bit cooler air and keeping the heat out a bit better (as compared to the DCI's like BMS and Vishnu). I think the red color is just plain SEXY! As I have said on other posts, I wouldn't touch the stock box without an upgraded FMIC... stock FMIC is both restrictive and crappy at cooling. Stock box is actually pretty decent at keeping temps down and probably supplies enough airflow with a stock FMIC still in place.

.2

[JoeyFiasco]

Originally Posted by Zeph

I see, my mistake. I wonder if you can order the Injen intake with no filters, and then just buy your own (better) filters and DIY those onto the end. I don't think the Injen design is restrictive, and it is (hopefully) getting a little bit cooler air and keeping the heat out a bit better (as compared to the DCI's like BMS and Vishnu). I think the red color is just plain SEXY! As I have said on other posts, I wouldn't touch the stock box without an upgraded FMIC... stock FMIC is both restrictive and crappy at cooling. Stock box is actually pretty decent at keeping temps down and probably supplies enough airflow with a stock FMIC still in place.

.2

that's smart thinking. they can even sell diff filters on their site or at least say which ones are compatible with the intake.

[ThorsHammer]

Well I have a BMS already and an Injen on order...so once it arrives, I'll see about fitment and what adjustments would be needed.

I can deal with the smaller filter...it's the closed off endcaps that get me. I love the reverse concical design on the BMS filter. More surface area = more air intake.

[TheTwinz]

I dont believe there is much space left for any other type of filter. The area where the pipes point to is rather small, or else they can't fit. Once you receive your Injen, you will notice how tiny the filters are. Each cone is is like the size of a fist.

[Zeph]

Like Thor said, even if size can't be increased the inverted filter design can still increase airflow significantly at the same size. x2 filters, even if each only gains like 10% that is still 20% more air... and I am SURE it is way more than 10% more per filter with the inversion.

[ThorsHammer]

I'm wondering if K&N (or whoever makes the BMS filter) has a patent on that design or something.

Can anyone find an open, reverse-cone filter that is the same dimensions or relative size to the Injen ones?

[ThorsHammer]

I found these.

Can't tell the dimensions, though.

http://www.amazon.com/Spectre-8136-C...=pd_sbs_auto_1

[TheTwinz]

that one looks a lot bigger than injens but then again, everything looks bigger in pics... injens are literally the size of your fist.

[ThorsHammer]

This company let's you order custom-sized ones. Just not sure which dimensions are needed.

http://www.sbfilters.com/products/universal_filters.php

[TheTwinz]

BMS DCI uses those sbfilters.

[Panoz]

Why bother to change cones...you will see no change anyway.

[JoeyFiasco]

Originally Posted by ThorsHammer

This company let's you order custom-sized ones. Just not sure which dimensions are needed.

http://www.sbfilters.com/products/universal_filters.php

that's a good find

[Former_Boosted_IS]

Just out of curiousity, what is the filter surface area of the Injen? Do you guys know for sure that the intake's problem is that it is not providing enough air?

[ThorsHammer]

Originally Posted by Former_Boosted_IS

Just out of curiousity, what is the filter surface area of the Injen? Do you guys know for sure that the intake's problem is that it is not providing enough air?

I've read that it's a combo of small filters, less surface area, and heat-soak from the metal pipes.

I would think that an aftermarket intercooler would solve the heat problem. So all that leaves is the small filters with less surface area.

If I can get the aesthetics of the Injen with the performance of the BMS by just switching to a different filter, I'll do it.

I'm just surprised nobody has tried anything like that so far.

[Former_Boosted_IS]

Originally Posted by ThorsHammer

I've read that it's a combo of small filters, less surface area, and heat-soak from the metal pipes.

I would think that an aftermarket intercooler would solve the heat problem. So all that leaves is the small filters with less surface area.

If I can get the aesthetics of the Injen with the performance of the BMS by just switching to a different filter, I'll do it.

I'm just surprised nobody has tried anything like that so far.

If someone changes it and it dynos higher than you know it is the surface area of the filters.

[ThorsHammer]

Originally Posted by Former_Boosted_IS

If someone changes it and it dynos higher than you know it is the surface area of the filters.

You would think a company as reputed as Injen would have done that during their R & D of these intakes. So maybe they did...and maybe the filters they are using are the best ones providing the best results possible for the intake design.

Then again, maybe they didn't. I'm willing to experiment, but I'm not going so far as to pay for different dynos just to see. I'll let the butt dyno be the judge I guess.

I know Terry did some testing to dispel the myth that an open, dual-cone design would perform worse because it would supposedly be sucking in all that hot air from the engine bay.

He showed that the air temps, after leaving the intercooler, were the same with dual cones vs. the stock box.

So that being the case, I doubt that the Injen would be any different. If there is a decrease in performance with the Injen, I think it HAS to be the filters.

If nobody else is gonna try this, hell....I will.

[Former_Boosted_IS]

Originally Posted by ThorsHammer

You would think a company as reputed as Injen would have done that during their R & D of these intakes. So maybe they did...and maybe the filters they are using are the best ones providing the best results possible for the intake design.

Then again, maybe they didn't. I'm willing to experiment, but I'm not going so far as to pay for different dynos just to see. I'll let the butt dyno be the judge I guess.

I know Terry did some testing to dispel the myth that an open, dual-cone design would perform worse because it would supposedly be sucking in all that hot air from the engine bay.

He showed that the air temps, after leaving the intercooler, were the same with dual cones vs. the stock box.

So that being the case, I doubt that the Injen would be any different. If there is a decrease in performance with the Injen, I think it HAS to be the filters.

If nobody else is gonna try this, hell....I will.

There is a lot of debate on whether a CAI will indeed provide colder AITs or not. His testing was on the dyno, so it is hard to tell. I just installed the STETT Performance CAI, and will finish AIT testing hopefully today. We should know the answer in real world testing soon.