Working on making some adjustments to another tune as the SAI system is giving me grief.  I cannot modify my tune as I cannot get Nefmoto to connect.  I have used another tune as the starting point.  I think i have the SAI sorted but I have issues with code 18321 - Pressure sensor for brake boost short to ground.  When I use my ECU no issues,  all tunes I have tried happen to have this code pop up.  8D0 907 551L is my box.  Tip B5 S4. 

Can someone point me in the right direction for telling ECU there is no pressure sensor for brake boost (G294)?  I tried reviewing settings in CWGGPBKV but that did not change anything.  I tried another tune from other car and it also gives the same issue for pressure sensor.  Also an L box.