I think you can get a scan gauge II that will work on the 7.3's for about $150 and it will monitor all the factory available variables. It will read and reset DTC's Too not sure about the diesels though. Also some of us old school guys just prefer dial over digital gauges.
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Back after many years.
2003 F250 CC LB 4x4 7.3PSD
Minotaur user.
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