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It's too fat during a 1,000 RPM band but OK at the top? I would leave it alone.
Most MFI pumps run lean at the high end, so if yours is OK, I wouldn't upset the balance. A little fat we can live with, what is the AFR?
To answer the question, I am not aware of any internal adjustments, nor does the MFI repair manual mention any that would correct that single area. You might be able to move the whole fuel curve up or down, but I dont' think there's anything specific.
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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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