Thread: EFI vs CIS
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Old 10-08-2009, 08:16 AM
mbdoc mbdoc is offline
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Join Date: Mar 1999
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Early EFI systems were plagued with problems. MB even recalled all of the 1971-74 cars to replace fuel hoses. MANY MB's caught fire & burned, over 500 totaled.

Trigger points & the MAP sensor were terrible. So was the actual computer.
Plus the system wasn't sequential, so emissions were higher.

CIS was more stable, although not as smooth at idle.
CIS can't make emission requirements of todays systems.
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