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I have never, nor do I know any who has, made that measurement. CMA requires you to set the throttle opening using a special tool and then go drive the car at part-load, ur use a roller dyno, to set the CO.
The trouble is that 30 years down the road, the factory's CO measurements are both hard to achieve due to wear in the system, and represent a mixture so lean that throttle response and transition suffer.
Why are you doing this test, is it something to do with MOT?
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'66 911 #304065 Irischgruen
‘96 993 Carrera 2 Polarsilber
'81 R65
Ex-'71 911 PCA C-Stock Club Racer #806 (Sold 5/15/13)
Ex-'88 Carrera (Sold 3/29/02)
Ex-'91 Carrera 2 Cabriolet (Sold 8/20/04)
Ex-'89 944 Turbo S (Sold 8/21/20)
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