I'm trying to dial in my idle so I did a plug chop. Installed fresh plugs into the warmed up engine, let idle for ten minutes then shut it down.
And from the other side of the same porcelain
I'm now running k&n pods DMC 916 exhaust, vf4 , stock carbs without tors, 30 pilot 290 main and needle in the 4th position from bottom, 2.5 turns out on air screws 800ft elevation 68*
I thought a 30 pilot would put me on the rich side but looking at the chop I would say it looks lean right? Also only one side of the porcelain has color and I'm not sure why that is. Any help would really be appreciated. Thanks