Originally Posted by
Wardski
In addition to my comments in post #86, the pictures of the blown motor is one of the V3 flashed ones. I am thinking that the reason for the blackened piston tops was probably due to the fact that the V3 flash allowed 100% WOT. I think from memory, the standard Maz ECU only allows up to between 50-75% WOT and no where near 100% WOT. With a 100% wide open throttle, surely this would cause the 2.3ltr MZR motor to run extremely rich, and could account for the carbon on the pistons.
This may have also caused detonation. eg. flooded chamber, lots of heat, boom??