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Old 05-22-2025, 11:46 AM   #10
2023_ZL1-AUTO

 
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Drives: 2023 ZL1
Join Date: Dec 2022
Location: Columbus, Ohio
Posts: 1,287
Quote:
Originally Posted by ZLRob View Post
NO, remove the FuelMax.. you do not want to be running it in conjunction with the dual fuel pump setup as the controller runs directly off the battery and not the FPDCM, so there will be a discrepancy in voltage and cause the secondary pump to have a different DC and ultimately fuel flow than the primary, and you don't want any of that drama.

To answer you original question, yes, reversing the wire at the connection point on the FPDCM will restore it back to factory. The exact colors you mentioned.

As for your Katech unit, is that thing brand new? Have you installed it yet, or what is going on with all that? It's important to you is why I am asking.
OK Thanks. The Katech pump I have now is new and only a few months old, probably less that 500 miles of drive time.
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