stock 9 ROM will not work with evoX map sensor out the box PnP right?
and vice versa if i was tuned on a evoX map sensor. flashing back to stock rom wont work if i dont change back to stock 9 map sensor?

what will happen if i dont change it back to oem 9 sensor when i try to reflash back to stock ROM if i was tuned on X sensor ?

thanks in advance

 

No, tables need to be changed for the new map sensor.

If you go back to the OEM 9 sensor and flash back to an OEM rom, it will run fine, as the OEM rom has the correct settings for the OEM 9 sensor.

 

^^ the above