VSS Questions

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tcanin00

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Joined
May 29, 2017
Messages
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Location
Harrisburg, PA
What are you guys doing for speed input for an OBD II PCM. I was running OBD I with a Standard Motor Products SC108 VSS and it worked fine.
Screenshot_20250519_075932_Chrome.jpg

When I converted to OBD II, the speed input was reading at about twice actual speed. I was advised on the Facebook group Magnum EFI Swap to send speed output to pins 25 and 28 of C2.
Screenshot_20250520_070721_Drive.jpg

This didn't work for my PCM. I think because it's originally programmed for a manual transmission.
Just want to see what other options for a VSS there are. I'm currently running a 904 LU, but am planning on swapping in an AX15 in the future.
 

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