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Originally Posted by mysocal911
Your knowledge of Porsche electronics appears somewhat limited, i.e. many of the Bosch 3 pin CDIs from the early '70s (55 yrs old now) are still functional.
This is in contrast to EZ69 design which was domed to fail, especially in an engine compartment with temperatures exceeding 100C.
Remember, the Mercedes Benz versions have a very low failure rate versus the Porsche EZ69 part! Those modules operate in a less severe environment.
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I will say that I have seen far more CDI boxes of all eras fail then EZ69's. A common problem even today. I had 2 go on my SC's when they were only a few years old on 2 different SC's. These were actually a bigger issue but replacements were available unlike these. Many had the ability to buy Permatune units which failed even more than the CDI's and or other units which were easily swapped in unlike the EZ69 units.
Porsche was never known for its electronics and is a weak point still to this day.
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Anthony PCA affiliate '77 member '83 '90 3.8 RS tribute, 91 C4 converted to C2,'93 964 C2, '93 928 GTS M '94 Turbo 3.6, '15 Boxster GTS M,16 GT4,23 Macan GTS,
Gone worth mentioning '71 E '79 SC, '79 built to '74 3.0 RS tribute (2390 # 270 hp), '80 928 euro 5 speed, '74 2.0l 914, '89 944 S2,'04 Cayenne TT '14 boxster, '14 Cayenne GTS 14 Cayman S, 18 Macan GTS many others
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