So, looks like I was using the wrong mask. Switched to $31 and everything looks correct.
So, looks like I was using the wrong mask. Switched to $31 and everything looks correct.
'90 Suburban w/ pretty much stock 350 TBI, 7427 ECM Conversion, sadly sold several years ago
'95 K2500 Suburban w/ soon to be 400HP 454
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.
Where do I find those?
'90 Suburban w/ pretty much stock 350 TBI, 7427 ECM Conversion, sadly sold several years ago
'95 K2500 Suburban w/ soon to be 400HP 454
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.
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.
'90 Suburban w/ pretty much stock 350 TBI, 7427 ECM Conversion, sadly sold several years ago
'95 K2500 Suburban w/ soon to be 400HP 454
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.
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