Originally Posted by
1QwkSport2.5r
The top of the piston should be a med-dark maple syrup color. Darker than that and it was run a bit lean. Heavy black carbon was run too lean. Clean or light tan means it was run rich. The color of the fuel can influence this, but even blue fuels will leave the piston a honey or maple syrup color if they were tuned properly.
Yea its a darker maple color, I'll take some pictures in a bit, I usually run my engines a little lean to have a longer lifetime on the engine and I don't need blistering performance out of my t-maxx
