The original move to the L-Jetronic system was for the power, efficiency, etc. that it offered and several manufacturers moved to it.

However, failure of the system left the car dead, and for that reason primarily some European manufacturers with reputations of durability and dependability including Volvo and Mercedes-Benz returned to the K-Jetronic / CIS system as it could have failures and still have a "limp-home" mode. The KE-Jetronic / CIS-E helped to make the CIS cleaner and more efficient until a more reliable electronic system was developed.

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Gone to the dark side

- Jeff