As it stands, you can get greater performance with a piggyback for $500 than a Dinan flash for $3500.00. It seems people are wising up to not overpaying for a name brand simply for its name and it appears Dinan's attempt to shed doubt on the quality of piggyback tuning was not enough to get people to stop buying piggybacks.
Dinan is in business to make money so it looks like some pride may need to be swallowed here if what Dinan is advertising below is true. The Dinan Turbotronics TCU is labeled a Tuning Control Unit which one can logically conclude is an external piggyback box that will rely on the factory ECU to remain in place.
Is Dinan a hypocrite? You decide.