Post by
Q45tech »
https://forums.nicoclub.com/q45tech-u112.html
Sun Sep 10, 2006 5:20 am
The MAF has +12 input, a ground, and a shielded return to ecu [varies from +1 >+4 volts].................have seen many where the +12 is sent to ecu destroying ecu and those where the +12 is applied to wrong MAF output destroying the MAF...................and those units where both were destroyed.
A great lesson in electronics.
Swapping MAF [trying to upgrade diameter] is almost useless in a NA engine since the engineers design the MAF to have no more than 7" WC pressure loss................the entire induction tract from atmoshere to cylinders is 25-28" WC............................1% is not worth the effort.