All of these tunes are lots of smoke n mirrors ...
I have yet seen one advertisement stating exactly what the parameters are that they're changing and only mention HP/TQ. Can't say what the fuel ratio/rpms are, or Timing settings. Transmission changes if any...
Scary if not knowing what AFR they're setting the tune to... Because that is what'll ruin your engine! Stock they run lean enough... But yeah, be happy with what HP they tell you you'll get.
