The dna filter appears to have more surface area but it only has 25 pleats compared to original filter with 50 pleats, so if you were to spread both open the original probably has more area.

I’m excited for my 100% stock intake and exhaust, with the flash. Call me weird but it will be stealth and a rocket!

weird that shortening the snorkels helped as well as removing the bodywork but cutting the holes did not.  When you look inder the tank it even question how benifitial even the stage 2 kit would be given the the square inches of available air path between the tank and inlet.  Maybe the side holes upset the air path by imposing a perpendicular air path.  I'd have assumed that the air filter itself would laminer flow any disturbences of the air post filter and the inlets would smooth out the rest.  Sucks that the factory engineers have so much more resorses at designing air flow than guys like us but they are too tied down with things like sounds to focus on pure air flow and performance.  I pretty such I got just just a noticeable amount more of inlet sound by removing my snorkels like you saw on my facebook post but it's had to tell exactly without a stock bike to compare to back to back.  Once I get an exhaust the inlet noise won't even matter.

The reason for the long snorkel is to keep the heavy dust particles at the bottom of the airbox. Of course you need to clean the air filter often. That is why I am using DNA filter. You clean them and back again like new.
I also experimented with Sprint Filter P08 F1-85 air filter on my 2024 MT-10. It is terrible!! Allows a lot of dust to pass through, and as they state on their web, it is only for racing purposes. This one is a BIG NO filter!!
https://www.youtube.com/watch?v=87rkzaHVevs&t=96s

If you want to have an effective gain you should test this airbox mode with a Sprintiflter filter, it is more performing than classic cotton filters. Will you do it?

Curious if cam profiles are the same on 23’ vs the 24’ and the head porting?

It's all in the restricted head. Heads only going to flow so much. David have you done any pulls with the filter box pulled running open intake or pod filters with stacks? It would either fall on it's face or make a bit more on the top end. I've read of cams giving up another 8 to 11hp which would add credence to the head being the choke point. But without a local tuner that can dig on the tune I've taken cams off the table for now.

' 23 XSR900 here..  Great news, Dave.. I did a bevel cut snorkle but kept the stock filter thinking I'd get a few K on it first before the DNA install.  Any update on the ECU Reflash?  The service guy at the dealer said it always throws a code, biggest risk is it dies at idle which I have to anticipate anyway.  Figured I'd wait to recall  mine and continue to enjoy your World Famous Flash until I get "The Light".  Just seems fishy to me, a LOT of these bikes out there without issue..  I'm feeling Lucky!

So on a completely stock MT09 SP 2024 would you suggest to cut the snorkels or not?Thanks ciao

Why do Yamaha engineers make those snorkels so long? Seems like a poor design unless they know something we don't .

I am currently running a DNA stage 2 filter in my XSR 900 but I don`t really like to loud Mooooooo sound at higher revs. Thinking of going back to the OEM airbox with cut snorkels.  

What is your favorite intake setup? Cutting the snorkels + OEM filter? Cutting the snorkels + DNA filter?  DNA stage 2 filter?

Very interesting - the holes don't work! The other aspect I'm curious about is shortening intake tubes - it allows a little more flow but also changes their resonance so the intake snorkel resonance boost moves higher in the rpm - in this case probably from about 1,800rpm to 3,600rpm? And is more noticeable at higher rpm. Would a shorter intake move it further up and also increase the benefit? And does this require any air/fuel modification to realise the gains? Of course I'm wondering if we can copy this and get an easy boost... what do you say David? :-)

This is the stuff that most people don't understand.  The intake is so much more than "More air equals more power"...  So lots of folks, they cut holes and all sorts of stuff, and it does more harm than good.

There is legit science that the manufacturer does... its not just air volume... there is intake velocity, there are pressure waves and pulses... they often tune the airbox harmonically, to create waves of "Constructive Interference" and things like that... And chopping it up or changing a filter might not help much, and quite often, might upset all that stuff and hurt performance.

I wonder if making the holes larger on those side panels, to let you keep them in place(cosmetically pleasing) but have them let more air through, coupled with removing some of the foam, might not be the best mod?  Costs nothing, and maybe you gain a HP, give or take?

can the whole air box be swapped from a 2023 into a 2024 and then use the stage 3 filter?

Are these numbers with stock exhaust?

Hello how mutch inch you have cut ?

Stock filter is the best ,  a lot of dust and dirt is in the air   keep your engine clear

Any testing or results with stock exhaust and just the dna filter?