Installed APexi FC. RPM stopped working

[Zeph331]

Hi guys i installed my Apexi FC and then suddenly my RPM became finicky but not working most of the times. 2/10 times it works. what should i check??

It was all fine and working 10/10 times before the ECU swap



Edit: never mind got it going

[steve shadows]

Hi guys i installed my Apexi FC and then suddenly my RPM became finicky but not working most of the times. 2/10 times it works. what should i check??

It was all fine and working 10/10 times before the ECU swap



Edit: never mind got it going


You mean the cluster? The harness that's plugged into the back of your cluster is also connected to the harness that clips into your engine harness (which clips in the pfc) it's probably lose in the back of the cluster OR the rpm output from the ECU plug on the engine harness is lose or falling apart.

There ya go. boom.