its not flange its metal headgasket... :lol:

generally it is better to replace the injectors with bigger ones (around 250ccmin instead of 160cc that 1.6 stilo has) but it costs more...u can control the palm from the parallel ecu...

the compression rate should be around 8 instead of 10.5..if u decide to keep the 10.5 u might see a rod or a piston stuck somewhere even with 0.4bar if u use poor quality petrol..