I need the diameter where the MAF sits, on the outlet of the air filter box (so I guess the diameter of the outlet from the airbox is the same), I think. I got a 3sge Beams engine without MAF and Air Filter Box and want to get the Intake to have the correct specs so ecu will work right. I will use standart Altezza 3sge MAF.
Cheers, Gregor Riemer.