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found a chip in my truck


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 I think that the reason for not stacking timing is erratic results.  The electrical timing is LIMITED to the timing range of the VP44.  You can not exceed the full advance timing, no matter what you do.  All the electrical tuners or chips reprogram or fool the truck's ECM and VP44 electronics. 

 

This is different from mechanical Injection Pumps like VEP7100.          

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 I think that the reason for not stacking timing is erratic results.  The electrical timing is LIMITED to the timing range of the VP44.  You can not exceed the full advance timing, no matter what you do.  All the electrical tuners or chips reprogram or fool the truck's ECM and VP44 electronics. 

 

This is different from mechanical Injection Pumps like VEP7100.          

 

As a tech from Quadzilla told me years ago the VP44 can reach full advancement in timing in stock form. So what the timing box/programmers do is change hen it reaches full advancement.

 

P7100 is the only pump without dynamic timing at all. It a fixed timed pump and will will never change over the span of RPM.

 

VE has old school hydraulic timing based on fuel pressure and KSB valve tied to the IAT sensor.

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