Question about air intake

[jkc-007]

Can anyone send me a diagram of the air channeling on the intake side of the turbo? I'm wondering if adding an aftermarket air box and down tube would really make a difference as I understand that somewhere between the down tube and the combustion chamber there is a tube/channel that would restrict the air flow anyway and can't be removed/replaced as it will affect the engine computer/performance and smog test standards. If this is correct then, would it better (more bang for my buck) to upgrade the exhaust side?

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[My12SecRanger]

member Loweredon33s has dyno tested multiple air box configurations and has listed the gains also he custom makes new larger turbo inlet pipes
if you are interested search whale dick ( I know it sounds bad) lol