Gauge cluster
I installed a 3.4 996 motor in my 1998 Boxster and also added a 996 gauge cluster.
I re-flashed my original DME with a 996 ROW flash. My gas gauge worked fine but I needed to reprogram the cluster for oil pressure and MPH.
I know there are multiple sending units for certain years gas tank and believe your gauge and sending unit has to match or you will get a distorted reading. Hope this helps
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