View Single Post
      11-19-2012, 12:11 AM   #6548
Jonny954's Avatar

Drives: E82 135i
Join Date: Oct 2010
Location: Fort Lauderdale, FL

iTrader: (1)

Yes I know what you mean...BUT my issue was a different one.
When I first had a misfire in cyl 1 when running the newly updated v401, I put a new coil in and went back to v301 (cause I never had a problem with it for months). I gave it a try again this WE and almost immediately got a misfire in cyl 6. I will exchange the coil as well tmrw BUT I wanted to know why it could be that I start getting a misfire only after switching to the v401 maps?

Originally Posted by Ænema View Post
If you are having consistent misfires in #6 ONLY then swap the #6 coil to another cylinder and see if the misfire follows. If it does follow then the coil is bad. If it doesn't fire then most likely it's either plug or injector.