F80 emissions

[DCT_M3]

Hello all,

So I unfortunately have to do emissions in order to register my new f80 so I went through the process of having my stock downpipes put on. After putting my stock downpipes on and retuned the car to stage 0 on MHD it's still reading catalyst as unavailable. Even after 500 miles of driving. Any clue on how I can fix this?

[TopJimmy]

You might ask MHD first but with my Bootmod3 I has to flash back to stock, and then do 3 drive cycles to get all lights green again. In my case keeping BM3 active in any way gave me red lights for catalyst, cat heat, evap, and another I can't remember...

[DCT_M3]

Originally Posted by TopJimmy

You might ask MHD first but with my Bootmod3 I has to flash back to stock, and then do 3 drive cycles to get all lights green again. In my case keeping BM3 active in any way gave me red lights for catalyst, cat heat, evap, and another I can't remember...

Good to know, I hate MHD my old car had bootmod3 and it's leagues better