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Thanks so much for that info. Your link above sent me in the direction of signal modifiers for tachs and think that may be the ticket, using the signal at a coil pack translated into what the cluster needs to see for RPM.
The Audi ECU that I'm running (2002 S8) sends tach signal to its cluster by CAN, and the 98 Porsche cluster does not use CAN.
[addit] Sending the Audi ECU signal (CAN) to the newer 986 cluster works straight away, confirmed by others using newer 986s for the swap. I am next going to try a tach adapter to see if I can match what the older 986 cluster expects to see for tach signal [addit]
I'll post after giving this a shot. Cheers
Last edited by 1thenaton1; 05-17-2021 at 07:26 PM.
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