Gale Banks upgrade on Workhorse w22 with 8.1 GM

There have been some piston failures due to reprogramming of the 8.1 ECM. GM used a hypereutectic piston, higher silicone content, and these pistons do not like any detonation. If GM had felt comfortable running additional timing and fuel in this engine they would have done so. No engineer leaves HP on the table unless there is the downside of significantly reduced reliability.
Randy