Stupid question, but I'm still asking

RustyRatRod said
A lot of people (even the factory) make the mistake of mounting the ECU so it's basically flush with whatever it's mounted on. Firewall, inner fender, whatever. I always put some sort of spacers under them so they get full airflow. Does it help? Crapped if I know, but it sounds good.

mopar head said
They make spacer brackets for the ecu`s.
The 72 NYer were factory.

I don't recall where mine came from:

ECM Hi Rev 2.JPG

Making one like it would not be that difficult.