Alain,
I removed all the old gauges when I installed 2xGi-275 as EIS 2 years ago. I also installed CiES fuel senders and display fuel quantity on the GI-275.
You need new probes for MP, RPM, oil P, oil T, fuel quantity, fuel flow, fuel pressure. The G3X sensor kit for 6 cyl engine has most of them.
Read all three GI275 installation manuals to get the full scope of the install.
-LJ
Last edited by Learjetter : 04-29-24 at 07:31 PM.
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