Originally Posted by ragingclue
No, as I understand it's all speculation as to exactly what they've got going on, but it's probably pulley, tune, long tubes, exhaust, and suspension.
They say "boost only" so I assume smaller pulley, tune, longtubes, and who knows what else. I think it is pretty impressive considering the car (5.8L) has not been out very long. However, the car is still very similar to the 2011-12s with the 5.4L, so not everything is newly developed. But 141mph traps is rockin!