[boosted 89]

Hey All

I'm in a bit of a bind. I just e-tested the 89 Porsche 930 and it failed miserably on the 25mph test..CO% was 3.95 ..limit is 0.32. HC ppm is 56..limit is 58. idle test is
mint but the 25mph is crap. Question is..if I hook up the o2 sensor will this correct any rich mixture at this mph or do I need to reset the CO% down. The O2 was disconnected and the CO% was set before I got the car so I'm uncertain where to
go from here. If I need to change the mixture with the adjustment screw..approx how much should I turn it CW to lean it out enough. I do have the Catalytic convertor on it too.

Thanks for any info and help

Chris