Originally Posted by Praemienhai
You are right. It is noticeable that probably all respected flash tuner (Dinan, Evotech/Noelle, ESS) are running richer than the piggyback tuner. Especially the tuner with an European backround (who have done long-term high-speed testing on the Autobahn, Nuerburgring-Nordschleife etc) pass on some hp and run al little bit more rich. There will be a reason for that...
Actually, now that the CANbus can clear tuner codes, the new maps run richer... I guess they don't have to stick to the stock A/F to hide the tune anymore.