BMHM or BPRK injector flow rate

[TheApocalyptican]

I understand that this is supposed to be a number set to match the injectors flow rate. What I don't get is that both my stock bin pulled off the chip (BPRK) and the BMHM bin I downloaded from here have the Injector Flow Rate (TBI lb\hr) at 478.1 lb\hr which makes no sense at all. I need to change this as I am running higher flow injectors than what came on my 95 454, but since this doesn't match the stock flow rates, I'm unsure what I should be setting it to.

[TheApocalyptican]

So, looks like I was using the wrong mask. Switched to $31 and everything looks correct.

[1project2many]

Glad you found the answer. Do you also have the injector corrections that go with your injectors? These values tell the computer how to adjust for changes in voltage and for small commanded opening times when the injector may not behave as expected. Tuning without these values can be very challenging.

[TheApocalyptican]

Where do I find those?

[1project2many]

Good question. If they're from a GM application you may be able to copy the information from another calibration. If they are aftermarket injectors you may be able to get them from the seller or manufacturer. You may also be able to find them by doing a google search.

[TheApocalyptican]

Gotcha. They're cleaned and flow matched earlier big block injectors, so I should be able to just go grab the info from an earlier year bin. Thanks for the info.

[1project2many]

That works. IIRC grabbing data from older 7747 ecm for newer 7427 you might find the tables or values don't line up exactly. But excel can help fill in gaps if needed.