Originally Posted by
jmpn02
As I started the break in on my B5, I did the 2.5mm air gap and richend up the LS needle as much as I could, but I could not get a smooth steady idle, the engine would pulse, almost like you were bumping the throttle. Is this normal?
During break in you are running super rich so your engine will not idle "perfectly", this is normal. The only thing that you are concerned about during break in is that the engine stays running. Worry about the idle after it is broken in and you are working on your race tune.