VP Dynamic Timing Vs. Advancing - Diesel Truck Forum - TheDieselGarage.com
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post #1 of 5 (permalink) Old 11-26-2009, 12:58 AM Thread Starter
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VP Dynamic Timing Vs. Advancing

The VP44 pump as we all know has dynamic timing. This means that injection timing advances or retards based on Engine RPM, and load. Obviously there are limitations to the range in which the pump can operate.

So, what I want to know is...

If you advance timing through the use of a timing box, i.e. an edge comp, edge ez, power puck, smarty etc... Are you just advancing the low end timing? In effect bringing it closer to the timing at full advance, and decreasing the function of your dynamic timing, or does it extend the entire range of the dynamic timing?

Just curious if anyone has thought about this, or knows the answer. Thanks,
Sean

2000 2500 reg. cab 4x4 auto 577hp
09 6.7L QC LB stick, 4x4.

TOTAL PERFORMANCE DIESEL 707-545-FUEL (3835)
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post #2 of 5 (permalink) Old 11-26-2009, 07:53 AM
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24 static seems to be the upper limit, I would imagaine the timing curve is coming in @ lower RPM or load.
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post #3 of 5 (permalink) Old 11-28-2009, 05:16 AM
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I would think it extends the entire range of the dynamic timing. This is why:
The boxes/programmers for these that don't touch fuel and still increase power would mean there is added timing on the upper end as well.

At least thats my take on it.

"some people do, some people talk."
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post #4 of 5 (permalink) Old 11-28-2009, 04:48 PM Thread Starter
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thats a good point phily.
Sean

2000 2500 reg. cab 4x4 auto 577hp
09 6.7L QC LB stick, 4x4.

TOTAL PERFORMANCE DIESEL 707-545-FUEL (3835)
www.totalperformancediesel.com
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post #5 of 5 (permalink) Old 11-28-2009, 10:47 PM
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Timing only boxes add ~15-20hp, completely possible by altering only the static advance. With a Comp box and Smarty with timing, the limit was still 24.
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