Got an 09, that i put charger on, built trans, etc... Took to Danville Performance for Mark Broviak to tune. No matter what was changed, the rev limiter remained stock, all the tables in the ecm for rpm limiting were changed, with no luck. Also on a side note, we thought we would read the tcm to see if there is something in there, that may be keeping the rev limiter from changing, but once the tune is downloaded we get an error message that says bad tune file format any suggestions?