User Tools

Site Tools


baseinjectordata

This is an old revision of the document!


Injector Data Compilation

These values were gathered from various sources. These may not match exactly with the values specified in the DSMLink user's manual. Regardless of which set of values you start with for your injectors, you will still want to run through the dial in procedure outlined in the DSMLink user's manual.

All of these values assume stock base fuel pressure (37psi for 1Gs and 43.5 for 2Gs).

NOTE: These values are for GASOLINE ONLY - they do NOT apply to cars running E85!

The formula to calculate the correct global setting for E85 is:
Stock Injector size/(New Injector size/((percentage of E85*0.33)+1))-1

NOTE: The E85 correction above may work for some, but it does not work for me. E85 has a stoichiometric A/F of 9.765:1 while gasoline is 14.7:1. So E85 should require around 50% more fuel that gasoline. That would make the formula more like:

Stock Injector Size / (New Injector Size / ( ( percentage of E85 * 0.5 ) + 1 )) - 1

So for 850s (as in my car) with pure E85, I would run:

450 / ( 850 / ( ( 1.0 * 0.5) + 1 ) ) -1 = 450 / ( 850 / 1.5 ) - 1 = 450 / 567 - 1 = -0.206 or -20.6%

Using that formula works perfectly on my car.

Brand/Vendor Size (cc) Global (%) Deadtime (µsec) Notes
Denso (stock) 450 0 0
Denso 660 -31 180
Denso 720 -38 405
Fuel Injector Clinic (FIC) 650 -31 210
Fuel Injector Clinic (FIC) 750 -40 330
Fuel Injector Clinic (FIC) 850 -47 330
Fuel Injector Clinic (FIC) 950 -53 330
Fuel Injector Clinic (FIC) 1000 -55 330
Fuel Injector Clinic (FIC) 1150 -61 330
FIC/Bosch/Ford 1600 -72 450
Hahn Racecraft 625 -18 180Actual flow: 530cc
Nippon Denso (ND) 660 -31 180
Nippon Denso (Evo VIII) 560 -18 0Has lower deadtime than OEM 1g/2g injectors!
PTE / Delphi 580 -17 180Modified GM Rochester 17113741 injector. Actual flow: 535cc
PTE / Delphi 680 -29 300Modified GM Rochester 17113814 injector. Actual flow: 640cc
PTE / Delphi 780 -38 315Modified GM Rochester 17113742 injector. Actual flow: 748cc
PTE / Delphi 880 -45 420Modified GM Rochester 17113743 injector. Actual flow: 840cc
PTE / Delphi 1000 -51 450Modified GM Rochester 17113744 injector. Actual flow: 940cc
RC 550 -18 180

E85 Flow Chart.

^ E85 Flow Rates		

^ Injector Size ^ 100% IDC ^ 80% IDC ^ Global

390cc 21.80 lbs/min 17.44 lbs/min
450cc 25.15 lbs/min 20.12 lbs/min
550cc 30.74 lbs/min 24.59 lbs/min
580cc 32.42 lbs/min 25.94 lbs/min
650cc 36.33 lbs/min 29.07 lbs/min
660cc 36.89 lbs/min 29.51 lbs/min
680cc 38.01 lbs/min 30.41 lbs/min
720cc 40.24 lbs/min 32.20 lbs/min
750cc 41.92 lbs/min 33.54 lbs/min
780cc 43.60 lbs/min 34.88 lbs/min
850cc 47.51 lbs/min 38.01 lbs/min
880cc 49.19 lbs/min 39.35 lbs/min
950cc 53.10 lbs/min 42.48 lbs/min
1000cc 55.89 lbs/min 44.72 lbs/min
1150cc 64.28 lbs/min 51.42 lbs/min
1200cc 67.07 lbs/min 53.66 lbs/min
1600cc 89.43 lbs/min 71.55 lbs/min
1850cc 103.41 lbs/min 82.72 lbs/min
baseinjectordata.1229639524.txt.gz · Last modified: 2008/12/18 17:32 by gamble