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Discussion Starter #1
I want to adjust the tdc offset in search of a power increase. I have found several sites which offer instructions to performing this proceedure, and all make reference to a diagnostic scan tool, what is this scan tool and how do you get one. Any info would be great.
 

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You get one by paying $3000


It costs about $100 to have it done at a dealer.
 

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If you loosen the IP you can change the timing. 1mm toward driverside is 2 deg. advance. 1mm toward passengerside is 2 deg. retard. Think timing reference mark.


 

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Simply moving the pump has zero effect on timing the electronic trucks only that you could move beyond the limits of the stepper motor....
 

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Discussion Starter #5
Where is the advantage (advance or retard). The factory spec calls for -.25 thru -.75. the people claiming this is a benificial change run from -1.3 thru -1.9. Is this adjustment worth the $100 to have the dealer diagnose my TDC offset.
 

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