something no one's mentioned and not sure if it's even feasible to consider part of the issue.
In the 2018 model and even my 2009 model, between the air filter and the turbo piping is a baffle. i had them removed as it was just a pull out with foam on it. we did it so you can hear the Nagasaki boi make the whistles.
i was going to install my banks setup yesterday and pulled the old air box out and decided to take the thing apart. the difference in the baffling is that its way thicker, and way heavier than previous years. i never did it with my 21 as they used the metal non reuseable clamp/strap so i just left it. on the 24 i broke the strap off and pulled the baffel and used a giant hose clamp.
not sure if thats a thing to try, or if it would affect anything or not. but i know the older 6.7's were a curved pass-through baffle where these are thicker and weird looking
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