4 pin maf ground seperation

[redtopracer]

Im using a 4 pin cobra 90mm maf on a megasquirt setup and running into some "ford" electrical issues.
Seems the megasquirt system gets real finicky when the sensor ground and engine ground are connected outside of the megasquirt, and they even tell you its big no no in the manual.
Ive traced it back to the maf, seems ford connected the 12v power ground and sensor ground inside of the maf.
Ive reached out to the makers of the hardware and gotten , " megasquirt is designed primarily for a map" as a response.
So i was wondering if theres a way to crack open the maf and seperate the 2 ground paths.