OK well with everything checked and verified, I took a deep breath and went for tweaking the EHA adjustment. As I understand, this varies the chamber pressure (lower pressure is supposed to be 0.4bar lower?). I wasn't measuring the chamber pressures so it was a bit hit-and-miss.

It's currently set to be richer than initially. This has improved the engine response greatly. However it's still not perfect with a very slight delay and without a crisp throttle response.

Russell

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190E's:
2.5-16v 1990 90,000m Astral Silver
2.0E 8v 1986 107,000m Black 2nd owner
http://www.maylane.demon.co.uk/190esmall.jpghttp://www.maylane.demon.co.uk/190esmall2.jpg