HRVP or SHO vp and other logical upgrades
I believe this thread has died out, but several observations.
My 2000 6speed 4. 1 rear 2wd
had vp44 fail, would not start, but once running it was perfect. 21 mpg city/hwy mileage, 15 mpg when towing.
I made all the mods I felt were necessary for the Edge J/A module:
1. 4" Magnaflow SS exhaust
fuel pressure would be 12 psi at idle and sometimes go down to 8 at wot.
I only used level 3 on street, and 2 when towing race trailer of 8,000 lbs
2. New carter liftpump with 1/2" Vulcan kit, plus Genos enlarged banjo bolts
Immediate improvement to 14 psi at idle, always above 10 psi at wot.
3. Installed SHOVP44. Idles lumpy sometimes, not really cammy, but rather like someone just shorting out ignition randomly. Not always rough however which is strange.
Did not pierce vp44 wire, and run Edge j/a at stock setting now.
Never smoked, now does when on boost around 1800-2200 rpm.
And EGT seems to really jump up faster than it did before.
Now starts up immediately!! First crank!!
Runs very smoothly, and seems to have at least equal power to #3 setting of previous stock vp44, but that did not have SMOKE!
When coasting not under load, throttle seems very sensitive and oscilates on off surging. Throttle seems much more sensitive.
I am concerned about mileage, as I have set back boost to 28 psi from 30 psi.
My first tank indicated with a 100 mile tow, to be 8 mpg! Same tow would have yield 15 mpg before, but not sure this was a good test as it was not long mileage.
So I am on the fence. The stock vp44 with pierced wire and setting variations was quite effective and mileage could always come back to reasonable levels.
The SHO VP44 does quite a job, and it does run quite well. Does the Edge j/a run this combination better with the pierced pmg wire?? One member hinted that it would run better with the total control over the system... I will question Edge on this, and also should the edge be set on a later year since the shovp44 must mimic a later year than my 2000.
Just another point, I replace the power steering pump while the 44 was off, and also replaced the diaphram and gasket for the vacuum pump while there. I have done everything upgrade/preventative at this point!
I bought the shovp44 since Industrial Injection said I would not experience a noticeable drop in mileage, because the increased power (they say 30%) would mean I would learn to "budget fuel delivery" They sold me when they said the re-build process was much more detailed on the SHO than others. Put the best in when you have the opportunity.
So what are other opinions/experiences? And is Edge better tapped into the brain of the vp44?
Experience counts here, opinions are second best.
Phil
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