T500 vs stock pump test

JD3020 · Feb 23, 2014

Tom S said:
I agree with this and have a question as well. Is 65% the max IRP value on a SD truck? I want to keep thinking the number was more like 80% but maybe that is a OBS thing. On both of those trucks I would have been very curious to see what the numbers were if the pulse width was less like say 4 vs the approximately 5 that it was.

Tom

I believe around 68% the IPR is fully closed. I have seen 80-90% on an OBS, but once you hit 70 you're getting all the oil thats there.

As for the PW numbers i know Golfer has said a couple times that the OBD PW numbers are not accurate.

thuglike · Feb 23, 2014

I thought it was 85%

Water_junky · Feb 23, 2014

Tom S said:
I was kinda suprised by that as well. It was one of the first things I looked at when I hopped in the truck. I had happened to have saved a screen shot from when when I looked at the truck the first time. It was definately a higher IPR duty cycled with the T500 pump. Not a lot like 1.2 or so percent but it was there. We went back and looked at the oil temps and they were the same. There might be an oil change in there so perhaps that is a factor that I am not accounting for. I only say that because we talked about the bypass filtration system he had put on the truck. I can email him and ask if you or anyone else is curious.

Tom,

There was an oil change with the new pump, didn't want to run old oil through the new pump.

Terry

Magnum PD · Feb 23, 2014

That makes all the difference then. No conclusion. LOL

m j · Feb 23, 2014

those readings do not look good for t500. I hope the tune only called for 2400# cause if it called for more and thats all it could do....

Gearhead · Feb 23, 2014

You may just be at the mercy of the core that was used if TE isn't rebuilding the pump to bring the clearances back in spec.

Tom S · Feb 23, 2014

I think it was his stock pump redone into a T500 but not certain. Maybe Water Junky will chime in.

I do not know what the tune called for, I just kinda looked at where the IPR maxed out at.

Water_junky · Feb 24, 2014

Tom S said:
I think it was his stock pump redone into a T500 but not certain. Maybe Water Junky will chime in.

I do not know what the tune called for, I just kinda looked at where the IPR maxed out at.

It was my stock pump redone to a T-500.

Water_junky · Feb 24, 2014

So I just heard back from my chip tuner and he is indeed asking for 2400 PSI so it is right on the money.

Tim @ P.I.S. · Feb 24, 2014

Just curious but why ask for a max icp of only 2400?

Water_junky · Feb 24, 2014

Not sure, he said he used to set it at 3200, but due to something with the injectors he has gone down to 2400 on all of his tunes.

lincolnlocker · Feb 24, 2014

Water_junky said:
Not sure, he said he used to set it at 3200, but due to something with the injectors he has gone down to 2400 on all of his tunes.

Wth? Thats not much better then stock tunning?

live life full throttle

Tim @ P.I.S. · Feb 24, 2014

Funny, not the first or second time I have heard this mentioned from tuners about some brands injectors.

That's why all ours are tested to the max our current pump will push 3200psi. And no issues holding it.

Its amazing the hp, not to mention drivability you get back when you can hold icp.