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Home >> Porsche >> 1986 >> 928 Standard >> Repair and Diagnosis >> Engine Performance >> Ignition System - BOSCH EZF >> Testing >> Octane Loop Test
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Octane Loop Test

The EZF ignition system can be retarded about 3 degrees through the pigtail connectors located on the ignition control unit harness. See Fig 1. Ensure pigtail connectors are disconnected for normal use. Connectors allow the use of lower octane gasoline.

Fig 1: Octane Loop Test
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