Intake/MAF post-filter question

[wfo9]

I was looking around under the hood of my t4r today. I'm not that familiar with it and wanted to poke around. I was also trying to see if there was a good place to mount an on-board air system. I started wondering what mounting options an aftermarket intake would open up and noticed that the maf sensor appears to be integrated into the airbox neck. I also noticed that there is some type of post-filter before the maf in the airbox lid

I've seen other vehicles have a screen right in front of the MAF to help with turbulence and provide more consistent readings, but a filter that far away from the sensor seems awkward. Anyone tried removing it.... Probably not a big difference, but can't imagine why it would be needed.

Also curious how the aftermarket intakes relocate the MAF. I did not really study it , but maybe there is a way to remove it. All the ones I'm familiar with are a complete tube that just sit in the intake track as a coupler.

 

[sandcrawler]

a lot of guys have mounted their compressors at the passenger side firewall, behind the intake box. pic below shows how the MAF is relocated into the TRD CAI (credit to whomever's pic Google found for me). two screws hold it in place in the intake tube.

pretty sure the other filter you're referring to is the hydrocarbon filter, which i removed from my TRD CAI with no ill effect.

 

[wfo9]

Hydrocarbon? So, I guess it is there for emissions/evap when the engine is off. Seems worth removing.

I was planning on the passenger fire wall area for the compressor, but I thinking it would be great to get the intake a bit more forward to make more room for a tank.

Those MAF sensor sure have gotten compact and simplified these days.