if you 'push' your engine (i.e. WOT, or to Redline), it will misfire, stutter, and engine light will come on.
drive like a granny and your engine may not know it needs carbon cleaning.
Originally Posted by DarkNemesis
Would love to hear from others?
If you had carbon build up in the intake manifolds...
What symptoms did you have?
I know about how to clean it via walnut blasting.
I mainly would like to know from others what issues you had.
Not sure if this only applies to n54s only.
Thx in advance