[Mr. 340]

Originally Posted by turas

Hi. I'm consider two options for the intake, both withe the air scoop and dry filter.

1. https://afepower.com/afe-power-51-12...-intake-system

2. Stock air box with: https://afepower.com/afe-power-31-10...y-s-air-filter

My current setup is:
440i
MPPAS exhoust
Wagner DP 200 cat
VRS charge pipe
Supra HPFP
Custom tune 500 HP

I wonder which option choose. Please list the pros and cons of each option.

If you don't mind spending the extra money then just go for the Magnum Force Stage 2 intake. It flows a bit more compared to just replacing the filter and maybe gives you a tiny bit more noise since it eliminates the resonator in the upper intake tube, and I personally think it looks cleaner overall.

With the Flow Pro Dry S filter the only con I have read is that it increases the amount of particles entering your engine, however I personally believe that shouldn't be of concern. AFE is a very reputable company and they know what they are doing. Many people run this setup and have no issues. Pros are it's much cheaper and combined with your stock intake which is already very good from factory should work just fine.

I personally have the Flow Pro Dry S Filter with the AFE intake scoop, will soon be getting the FTP intake pipe to complete my intake setup.

[SimSimmaF30]

When I tell you I wish the eventuri wasn’t so expensive so it made sense for everyone to purchase. Aesthetically, it’s the most beautiful one out there. Financially it’s stupid to spend so much on an intake.
Whatever kind of engineering magic they did, the sound is intoxicating. There’s a grumble/rumble/fluttering sound it makes under light acceleration that’s 🥵🥵🥵🥵.
Good luck with whatever you decide on!

Shawn

[mike@x-ph.com]

MAD released their new intake, it's not a fancy one like Eventuri but it sounds great with spot-on fitment, great price and comes with an upgraded intake pipe for a better airflow

[Stucks]

It is also important to note that some folks have received a CEL due to the sensor placement on some aftermarket intakes.

[ATL_Nak-Muay]

I have the bms with the silicone snorkel. Got rid of that over baffled pipe and sounds good. I think it was the cheapest of the pack.

[SRB440IGC]

Hey guys,
So after reading this thread (and many others) i decided it would be best to post here.
If i understand correctly, there's nothing wrong with the factory airbox and the only real "restriction" is the OEM filter. That being said, i tried searching for any data that compares our factory filter vs drop-in vs CAI and came up with no results. I've seen a few dyno sheets with 10-12hp gains from full AI kits but nothing for drop-in filters.

I'd like to keep my OE Airbox w/ after market drop-in and intake piping. I see BMS makes a silicon option and was wondering if there are any other choices out there.

I don't care much for flashy looks or induction noise (although I wouldn't hate it as a side effect) just looking for better flow. This set-up would run me about $150 - $160 for what I feel would be comparable to any other AI on the market.

Thanks!

[Mr. 340]

Originally Posted by SRB440IGC

Hey guys,
So after reading this thread (and many others) i decided it would be best to post here.
If i understand correctly, there's nothing wrong with the factory airbox and the only real "restriction" is the OEM filter. That being said, i tried searching for any data that compares our factory filter vs drop-in vs CAI and came up with no results. I've seen a few dyno sheets with 10-12hp gains from full AI kits but nothing for drop-in filters.

I'd like to keep my OE Airbox w/ after market drop-in and intake piping. I see BMS makes a silicon option and was wondering if there are any other choices out there.

I don't care much for flashy looks or induction noise (although I wouldn't hate it as a side effect) just looking for better flow. This set-up would run me about $150 - $160 for what I feel would be comparable to any other AI on the market.

Thanks!

The drop in filter makes a very small difference, if any. I use to have a BMS intake (the blue cone filter) and power wise I really didn't notice much either, but when I read on the forums about the stock OEM airbox being better at keeping IAT lower I went back to the stock airbox to give it a try. After some testing and logging I did notice a decrease in my IAT therefore I just kept it and sold the BMS intake. Now my intake setup is the AFE Pro Dry S filter coupled with a BMS intake silicon hose. It doesn't sound as loud but I can still hear it a bit and I personally dig the stealthier engine bay look.

[talontdone]

Originally Posted by Mr. 340

If you don't mind spending the extra money then just go for the Magnum Force Stage 2 intake. It flows a bit more compared to just replacing the filter and maybe gives you a tiny bit more noise since it eliminates the resonator in the upper intake tube, and I personally think it looks cleaner overall.

With the Flow Pro Dry S filter the only con I have read is that it increases the amount of particles entering your engine, however I personally believe that shouldn't be of concern. AFE is a very reputable company and they know what they are doing. Many people run this setup and have no issues. Pros are it's much cheaper and combined with your stock intake which is already very good from factory should work just fine.

I personally have the Flow Pro Dry S Filter with the AFE intake scoop, will soon be getting the FTP intake pipe to complete my intake setup.

I went with the CTS intake.... similar to the old AFE ... its quite loud in a good way. Happy with the Purchase but can't really quantify the value add .

[Mr. 340]

Originally Posted by talontdone

I went with the CTS intake.... similar to the old AFE ... its quite loud in a good way. Happy with the Purchase but can't really quantify the value add .

Nice! That is a good choice since they come with a heat shield and look clean in my opinion.

[kilogram]

Originally Posted by SRB440IGC

Hey guys,

If i understand correctly, there's nothing wrong with the factory airbox and the only real "restriction" is the OEM filter.

The biggest restriction is the OEM cold air tube, not the filter:



For reference, the sensor I did these tests with can detect the change in atmospheric pressure between your waist and your forehead. The stock filter accounts for 0.0578 psid of the total pressure drop. The cold air tube accounts for about twice that.

[vcx]

Originally Posted by kilogram

The biggest restriction is the OEM cold air tube, not the filter:

.

is there an aftermarket solution that is less restrictive ?

[SRB440IGC]

Originally Posted by kilogram

The biggest restriction is the OEM cold air tube, not the filter:



For reference, the sensor I did these tests with can detect the change in atmospheric pressure between your waist and your forehead. The stock filter accounts for 0.0578 psid of the total pressure drop. The cold air tube accounts for about twice that.

Thank you very much for posting this.

I'll keep searching for more options that retain the factory airbox. If I can't find one, I'll just fabricate it myself.

[Stucks]

Originally Posted by kilogram

The biggest restriction is the OEM cold air tube, not the filter:

For reference, the sensor I did these tests with can detect the change in atmospheric pressure between your waist and your forehead. The stock filter accounts for 0.0578 psid of the total pressure drop. The cold air tube accounts for about twice that.

Just so some folks dont get confused, this is the tube going from the front of the car to the airbox, not the tube going from the airbox down to the turbo inlet.

[Wires]

Originally Posted by kilogram

The biggest restriction is the OEM cold air tube, not the filter:

For reference, the sensor I did these tests with can detect the change in atmospheric pressure between your waist and your forehead. The stock filter accounts for 0.0578 psid of the total pressure drop. The cold air tube accounts for about twice that.

It would be interesting to see if it's the whole hot weather intake track, or the tube.

When you look at the tube, it goes from a large outlet and shrinks to a small inlet. That does a 90 degree to pull from in front of the grill which has a grill to stop leaves, etc from getting pulled in.

Is it the mostly the tube? Or that grill which is blocking a portion of incoming airflow?

Great info though! Nice to see real data vs butt dyno conjecture!

[rusty_sojah]

Originally Posted by SRB440IGC

Thank you very much for posting this.

I'll keep searching for more options that retain the factory airbox. If I can't find one, I'll just fabricate it myself.

It's been two years, i was half hoping/expecting to see a for sale link to a custom front intake tube by now what's the hold up

i know the path is not the same but when i first came to japan 20 years ago i saw people using dryer hose vents in their bumpers on their old jdm rust buckets that would dump out right infront of their old krusty ass flaky cone filter really not sure of any real-world gains there though