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Old 04-03-2016, 01:06 PM
stodg73's Avatar
stodg73 stodg73 is offline
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Join Date: Nov 2010
Location: Southern Colorado
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Glad that you dot your beast running right!
O.O., 01.5, Dodge, 2500, High Output (H.O.) Cummins Turbo Diesel (245/505), Quad Cab Long Bed (QCLB), 4x4, Sport, Original Bosch VP 44 Injection Pump, 6 Speed/NV5600 Transmission, 3.55 Gears, 105k, currently stock engine, Fram Air Filter, 285/75R16s, Glow Shift Gauges: Fuel Pressure (FP), Boost, Exhaust Gas Temperature (EGT), Oil Temperature, SMARTY@1, Airtex lift pump 19 psi @ idle, 14 psi @ WOT, Propane Injection, 2 Stroke Oil, Intake Air Temperature (IAT) Fooler = Better MPG, Bed Lined, Chrome Nerf Bars, more to come!!

'79 CJ5, 258ci, 3" lift, 33x12.50x15, Stock Engine and 3 Speed Tranny
'05 Suzuki, GSX1300R, Hayabusa, All Stock, #3('00 blown engine, '00 stolen, & '05)
The complete live & learn and pass it on by H. Jackson Brown, Jr.
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Old 04-03-2016, 08:47 PM
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rancherman rancherman is offline
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Join Date: Feb 2015
Posts: 84

Originally Posted by MnTom View Post
After more reading I am not sure about the timing part either, but the HO pump has smaller piston bores in the pump and it develops higher injection pressure and less fuel injected. The SO pump has lower injection pressure but more fuel injected. You say you are seeing 15psi more boost? Wow, that's quite a bit! Is there a stuck waste gate on it? If you were only seeing 20psi before and now 35psi then you should be fine, but anything over about 35psi and you are over speeding the turbo (HX&HY35). Keep in mind that at an idle the turbo spins at about 10,000 RPM and when you are at wide open pulling hard it will be upwards of 160,000 RPM.
I was going off the scan tool readout. Now I remember it's stated in Hg. All I know is at wot, it reads 70, and I don't remember what idle was.. . Mid to upper 50's was all I was getting before on previous pump

So, when I convert my Hg readings (inches of mercury) of 70, and divide by 2.039, I get 34.33 PSI. When I convert the old readings, I was pumping about 24.5 PSI.
Not quite the 20 PSI increase!! But sounds like I'm right where is should be, and more important, far from where it WAS!!
Just gonna list the Mopar stuff:
2000 ram 3500 4X4 reg cab, 6 speed, fass 02 drrp
1998 ram 2500 4X4 reg cab, 12v will have 6 speed to replace the 5, Not sure where it's headed in the mod dept. Stay tuned!
2006 Jeep Liberty CRD, No more EGR, greendiesel eco tune, weeks' intake elbow, hemi torque converter
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