NVW
Well-Known Member
Mine has never varied in the 9 years I have owned it, maybe I have been lucky.
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TDCO
- Thread starter ak diesel driver
- Start date
bison
Well-Known Member
Mebbe you never checked ^^^ 
NVW
Well-Known Member
Just checked it recently and it is at -1.50, where I set it.
Chevypoor
Active Member
The dealer I bought little D from did a remote mount PMD. Little did I know he never installed a resistor! I only found out about a year later when I bought a Heath tune and tried to have the timing set. The Standadyne guy tried and was unsuccessful. However when he put the truck in TDCO learn it threw the code for no resistor. I had driven the truck for approximately 30k and it never threw a light. The truck is OBD1. The dealer also did an IP and they never timed it.... it was set at TDCO +1.65 and the base was at -1! The Standadyne dealer said alot of shops just throw a new pump on and send em out the door! As long as no SES light comes on the customer would not have any clue. Glad I have the software to do it right now. The truck ran like stink once the timing was cranked up. We went to -1.85 and 6 initial.