with the larger piping, the MAF sensor is actually pretty centered. My bro pulled off the stock intake and said the MAF sensor was nearly touching the wall in there, so if anything that would've been the case with the stock intake. And to think of it: larger piping, larger air filter that breathes easier, and a shorter route to pick up air instead of the ridiculous "snorkel" stock setup could contribute to the 25% better air flow
There is going to be an improvement yes, but I think you might not get why the MAF would behave differently.
If the ECU is tuned for the MAF to be in a certain place in the piping, and that placement changes, the ECU doesn't know that.
A MAF element tells the ECU about airflow by measuring how much voltage it takes to keep the element plate at a specific temperature.
As air flows by the element it cools it then voltage is supplied to heat the plate.
Basically it measures the amount effort it takes to keep things steady.
Placement of the MAF introduces it to other types of turbulence/influences.
So, although it sounds like I'm completely contradicting the ability for the Spectre intake to properly feed air to the motor, I am not.
Gains are certainly possible, but the *only* way to prove exactly what's going on is to test the intake on a machine for verified airflow.
Stock intake gets "x" CFM @ *psi, and Spectre/DDM/ZZP intake gets "y" CFM @ *psi.
Just trying to be as specific as possible when it comes to modifications and claims about anything beyond "It feels stronger".