The MAF should be installed in original MAF position which should has straight airflow before and after MAF and 6" from TB. Larger diameter silicone hose may be required.
Observe flow arrow as displayed on MAF element - Open side of element must face air cleaner.
Note * Legend is on MAF element, under connector: TB<=Air
A-Yellow > MAF signal
B-Black with White stripe > ground
C-Pink > +5 V
D-Purple (OEM) or Black > ground
E-Tan > IAT sensor
Make sure all clamps are secure and that there are no air leaks.