Lets talk ICP and DC%

[Goose350]

What should Injection control pressure and duty cycle be at a given RPM?

Say at idle, cruising speed and rev limiter.

This would be a stock truck. What about mildly tuned? Race tuned.....?

[bismic]

Stock truck (except for PHP tuned FICM).

IPR should be around 22-24% DC at hot idle; up to maybe 30% but that maybe a little too high. My ICP is around 580 psig then.
IPR should be around 84% DC when cranking. I believe my ICP is about 1900 psig when cranking
IPR should be around DC 15% KOEO

[Goose350]

That is right on line with what I am seeing stock tuning.

[Evil Eye]

Several times when I have been pulling the trailer up a grade, I have seen 85% IPR and ~4200 psi ICP when datalogging in my tow tune. I don't usually datalog when I am daily driving with my race tune in.

[Goose350]

And that is why you are a slacker.

The most I can get is 3600ish at 74%

[Evil Eye]

Originally Posted by Goose350

And that is why you are a slacker.

The most I can get is 3600ish at 74%

Why yes. Yes, I am!

Sounds like a high pressure oil leak. Have you updated your STC fitting to the one-piece design and verified your dummy plugs? Your pump should do at least 4000. How many miles now?

[Goose350]

At least 4000 when? That 3600 was normal driving, not holding it at high rpm.

248,000 on the truck. I haven't did anything the stc fitting or dummy plugs

[Evil Eye]

Originally Posted by Goose350

And that is why you are a slacker.

The most I can get is 3600ish at 74%

I assumed the phrase above meant that it was the maximum amount of pressure that your HPOP was capable of producing...

If that is max when you are getting on it in your race tune, it's probably just fine!

[Goose350]

Whoops.

That's the max I hit when I am just getting on it with stock programming.

Im not having a problem, but thought it would be a good discussion topic.

[Evil Eye]

And I'm the slacker!!!

BTW, what's the difference between PSI and PSIG?