2012 vs 2013 5.7 tone rings

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Moparjared

Junior Member
Joined
May 10, 2026
Posts
1
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Location
Kamloops
Ram Year
2013
Engine
5.7 hemi
I have ran into a problem with my 2013 ram, I have installed a 2012 5.7 and got no injector pulse. I realize now the tone rings are different (2 different 58 tooth)
Wondering if anyone can help me with what my options are? Is there anyone that can reprogram ecu? I can’t believe that the ecu is that sensitive that .040” different spacing in between teeth results in no start! Any advice would be appreciated!
 

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