[PuntoRex]

Hi,

You definitely need more water! :twisted:

When I was using system 1S, my car was happy with 0.5mm jet in winter & up to 0.7 in summer. The engine is only 1.4l & flows much less air & fuel than yours.

And, you might try adding pre-compressor injection to improve the compression efficiency. It works very well on my car.

Be cautious though. Someone got a damaged compressor wheel. You may find the post here somewhere. I've not had time to inspect mine yet. Supposedly it's fine because the boost is still coming up strong....