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trreed

trreed's upgrade thread

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dripley    1,083
dripley

Just how difference does the SO pump make on the HO engine? I have read a little on it but know less than I have read.

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trreed    135
trreed
8 hours ago, notlimah said:

Nice! How long have you had the new pump on there now?

About 6 months now

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trreed    135
trreed

@dripley what I've noticed with the SO pump is more fuel at higher RPMs on canbus, more wiretap, but without the internally advanced pump, slightly slower turbo spool, and as a result, a little more soot. Another thing I noticed is on the quadzilla. With the HO pump I was starting around 82%, and with the SO I'm starting my daily tune at 97%. 

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dripley    1,083
dripley

Appreciate the info. My pump has almost 200k on it. Hope holds out longer but you never know. It seems my turbo spools a little slower these days but maybe because it has over 400k on it and never been touched. Hopefully they both will take a little bit further. They both seem to be working fine for now. A quad is not in the picture for now either. I bought a Comp a few months before this magic tuner came out. 

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Me78569    1,933
Me78569

I am always amazed how different the vp44 trucks respond.  Something as simple as a vp44 change makes the truck have a new personality.

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trreed    135
trreed

I agree Nick.  When I thought my HO VP was dying (now I believe it was an issue related to a flash in the quad not getting along with my ECM), I had an SO VP on my upgrade list.  So turns out the upgrade was premature, but I still am glad it happened.  

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Dieselfuture    288
Dieselfuture
On 8/12/2017 at 3:16 PM, trreed said:

@dripley what I've noticed with the SO pump is more fuel at higher RPMs on canbus, more wiretap, but without the internally advanced pump, slightly slower turbo spool, and as a result, a little more soot. Another thing I noticed is on the quadzilla. With the HO pump I was starting around 82%, and with the SO I'm starting my daily tune at 97%. 

That might explain why with my 75hp injectors I start at high 70 low 80 for my tunes otherwise it will smoke, but yet I can max out canbus around 14-16psi if flored. 

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