The car is a non-lambda car because I'm European .

Identical system but the closed loop is ruled out - it just uses the EHA for acceleration enrichment, cold starting enrichment, and deceleration shutoff. Therefore should be nice and simple..... unless something is wrong with the signals the system's generating, or with the mechanical fuel parts, or there's an air leak. Just trying to learn what the symptoms are telling me. It's not that bad, and probably should put it down to being an old car with mechanical parts that wear out. But I know there's something wrong with it, something is missing.....

Oh I even rebuilt the head and still no solution. There's nothing major left but the ECU, fuel pumps/lines and ignition...!

Ignition: plugs and dizzy are new, I've tried a spare ignition computer, and the idle and high idle advance were checked, tested OK. Also primary and secondary (?) signals were fine according to the guy who tested them.

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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