Anyone know if there is a difference between the Sensor and Analog Grounds on the Evo9 ecu?

Pin #34 - Sensor Ground

Pin #49 - Analog Ground

MrFred's Evo9 PinOut has them both labeled as Sensor Ground.


I'm wondering if it would be OK to have these pins connected in a Patch Harness? Earlier ecus don't have the Analog Ground. (I don't want to cause a ground loop or something, if they are different.)

Does anyone know if these two grounds are connected to different sensors? Or are they joined together in the harness?


Thanks much for any info.


Edit:

Pin #34 - Sensor Ground - Does MAF, Intake and Exhaust CAS, Crank Trigger

Pin #49 - Analog Ground - Does TPS, MAT, Coolant Temp.

Would it be OK to have these connected???

Only reason I can think of for having them separate is noise reasons. They are both fed +5 v.

 

Separated ground is there from evo4, i guess the harmonics created by pulse signals make significant contribution to analogue signals. I would keep them separated.