As I go back & reread the original tests by C&D & R&T of the '04......(both tests were from 6-speeds)....the C&D article says the controls won't allow >4000 rpms unloaded ...whereas the R&T spec sheet (at the bottom) says "best launch by 4200 rpm drop clutch"......how did R&T get 4200 if computer doesn't allow >4000 rpm???????