I tried to increase RPM limit with ECUFLASH from 6700 to 7100 for the stock rom but after the flash there was no difference in the car's behaviour, RPM was still the same 6700rpms. First I thought the ECU wasn't flashed but then when I read the flashed ROM I confirmed it was modified.
What could have happened here?, this is the first time it doesn't do what I write. Could my tactrix cable be messed up?, is the deffinition ok?