Open Ecu is a great program to a tuner who is good at it.

The problem with reflashing the stock ECU is.. if the computer freezes, the ECU is Fuked. If the program log is deleted your also fuked... so its not like the piggy back systems. But for that Cobb is good I guess. The real time updates are good. compared to the stop turn car off. Reflash then turn car on and drive..

I was around Matan daily when he was tuning

STI's/WRX's/G35/350z/RSX's/New Mustangs...

It sucks I didn't get to learn everything he knew..