OnyxSilveradoSS

iTrader: (4)

this is an issue. the sets of #'s posted are different???

they are close...but not the same???
truckman's:
43.82 44.09 44.37 44.64 44.9 45.17 45.44 45.7 45.96 46.22 46.48 46.74 46.99 47.25 47.5 47.75 48.01

03sierra's: 44.33 upto 46.94

charcold-bowtie

iTrader: (10)

the small differences will be taken up elsewhere in the tune, ideally you can switch injectors out with no tune changes except IFR values.

I just took these 42lbers out last month and put stockers back in, and need to do a tiny bit of ve correction now.

Use these numbers

43.837426
44.085446
44.333465
44.581484
44.891509
45.139528
45.387547
45.635567
45.883586
46.193610
46.441630
46.689649
46.937668
47.185688
47.495712
47.743731
47.991751

KLUG'S SS

iTrader: (6)

43.82 44.09 44.37 44.64 44.9 45.17 45.44 45.7 45.96 46.22 46.48 46.74 46.99 47.25 47.5 47.75 48.01

.....these are the correct values for a returnless style system, based on the specs that are out there on the marine injectors. Of course to know exactly what they are flowing at the only real way would be to have "your" specific set of injectors sent out and flow tested at the fuel pressure that they are going to be run at ie GM's 4 bar (58psi)

OnyxSilveradoSS

iTrader: (4)

thanks. two people having the same numbers makes me feel alot better...now the problem is the values in my current tune are:
34.04098 34.04098 35.03307 35.52911 36.02515 36.52120 37.01724 37.51328 38.00933 38.50537 39.00141 39.49746 39.99350 40.48954 40.98559 41.48163 41.97767

now I change the IFR to the new values...and what?? Will I be super rich? will I need to change anything else?? I am confused and dont want to wash my cylinders.

charcold-bowtie

iTrader: (10)

nope, should run pretty decent. Since the pcm knows the right values, assuming youve already swapped the injectors in as well. Probably have to do a tiny bit of correction elsewhere still

OnyxSilveradoSS

iTrader: (4)

Now when I try to enter the new values, it changes them.
example, I enter 42.820 and The cell is 42.83? I dont get why I just cant enter in the new values??

charcold-bowtie

iTrader: (10)

efilive? I cant remember why it does that, but that minimal difference wont really matter to much i nthe end

KLUG'S SS

iTrader: (6)

Right. Just copy and paste in the 43.82 and whatever it ends up rounding up or down to is perfectly fine like charcold stated, the tuning software you are using may round the value to a slightly different amount but dont worry about it, this is normal for this to happen.

kbracing96

iTrader: (26)

The numbers will change slightly some times due to rounding and the way the PCM actually stores the value. It stores "bits and bites" so it has to convert the value into some thing it can store in segments of 8. It's all computer talk, lol.