Sort of anyway. I just got home from the Black Hills Classic. I had a chance to do 2 5th gear to rev limiter runs (6600 rpms). At the point the rev limiter hit both times, I was at an indicated 177 mph!!! /phpBB/images/smiles/icon_biggrin.gif /phpBB/images/smiles/icon_biggrin.gif /phpBB/images/smiles/icon_biggrin.gif Now how accurate is the speedometer? I don't know, but side by side at 100 mph with 2 other buddies C5s, they showed 102 on theirs and I had 100 on mine. Was I maybe going 179 or 180? I'd like to think so, but I say 177 for now. One of my friends wants to take his GPS in my car and see how it compares to my speedometer, but I don't know how accurate GPS's measure speed either.