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WUR part# compatibility?
My 79 SC has a Bosch # 0.438.140.072 which is for an 1980 SC.
It does not have vacuum ports on it. I understand how the WUR is supposed to enrich the mixture at WOT on a 78/79SC. A friend offered me a 0.438.140.033 (1976/1977 part number) to try. I am supposed to have a 0.438.140.045 for a 78/79 SC.
Does anyone know what difference is between the .033 vs the .045 WUR. I would guess that there is some sort of difference but maybe it would work OK? I am most interested in ensuring that I get enough enrichment at WOT. The present non vacuum WUR seems to work OK for warmup issues, I just think I am being short-changed at WOT conditions.
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German autos: '79 911 SC, '87 951, '03 330i, '08 Cayenne, '13 Cayenne
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Men do not quit playing because they get old.... They get old because they quit playing.
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