reprogram injector flow rates

[redhardsupra]

use the one with correct units for your tables, there's a reason why there's multiple outputs of the spreadsheet

[nathans1987]

3.546875
3.601563
3.679688
3.875000
3.921875
3.984375
4.031250
4.054688
4.078125
4.117188
4.140625
4.171875
4.218750
4.250000
4.296875
4.351563
4.406250

that is standard what i had its not linier like the spreadsheet gave me and its alot lower. i had the rihgt units grams per second.

[joecar]

so for standard injectors i put this in

Injector Rated Fuel Pressure: 43.5
Your Fuel Rail Pressure: 58
Injector Rated Flow Rate: 28.55

For the stock injectors, this number would usually be 58 psi also... are you sure you got this number correct...?

[nathans1987]

nope i have no idea what i was doing. i tryed to put the numbers in the correct boxes either there named badly or i still dont understand what each does, most likly the latter.

[nathans1987]

Injector Rated Fuel Pressure: 58 psi
Your Fuel Rail Pressure: 28.55 psi
Injector Rated Flow Rate 43.5 lb/hr


New Injector Flow Values
MAP (PSI) MAP (kPa) G/SEC LB/HR LB/MIN
0.0000 0 3.845465 30.520102 0.508668
0.7252 5 3.893998 30.905292 0.515088
1.4504 10 3.941934 31.285741 0.521429
2.1756 15 3.989294 31.661618 0.527694
2.9008 20 4.036098 32.033085 0.533885
3.6260 25 4.082365 32.400294 0.540005
4.3512 30 4.128114 32.763387 0.546056
5.0764 35 4.173361 33.122500 0.552042
5.8016 40 4.218123 33.477761 0.557963
6.5268 45 4.262416 33.829292 0.563822
7.2520 50 4.306252 34.177207 0.569620
7.9772 55 4.349647 34.521615 0.575360
8.7024 60 4.392613 34.862622 0.581044
9.4276 65 4.435163 35.200325 0.586672
10.1528 70 4.477308 35.534819 0.592247
10.8780 75 4.519061 35.866194 0.597770
11.6032 80 4.560431 36.194535 0.603242


is that how its ment to be done?

[joecar]

Injector Rated Fuel Pressure: 58 <-- The pressure at which the rated flowrate was measured/tested.
Your Fuel Rail Pressure: 58 <-- The pressure you measured on the end of your fuel rail.
Injector Rated Flow Rate: 28.55 <-- The flowrate produced by the injector when tested ("rated") at the rated pressure (see the first item above)

GM rates the injectors they use at 4 bar (58 psi)... same as the fuel rail pressure.

You have the stock 28 lb/hr injectors, correct...?

[nathans1987]

yep stock ahh ok i getfor some reason i thought the rated flow pressure was 43.5. thanks. its still a bit confusing tho the standard tune gets upto 4.4g/s the recalibrated one with that spreadsheet is only 3.9g/s at 80

[hquick]

if i have the standard injectors do i leave the IFR {B4001} table the same as a standard tune? if not i am wondering how i calculate what it needs to be.

If you're still using the stock injectors at the stock pressure...why change it?

[joecar]

He can use the spreadsheet to see how close the stock table has been calculated...

Of course, the other injector tables are also important and work together with the IFR table.