IFR table

[charcold-bowtie]

I need the injector values for my truck please. Its a stock pump 04 silverado. Put the following injectors in. Also put these values in and the truck shows to be running lean on the wideband. Any help is appreciated.

Delphi Multec II Shorty Direct-fit LS1 G.M. SUV injector 44 lb / hr.

Part Number 17113739 (OE Part # 25176061)
Direct fit for short G.M. LS1 SUV injectors
Static flow @ 37.95lb/hr @ 43.5PSI / 300KPa (4.31 g/s = 398cc/min)
Static flow @ 43.82lb/hr @ 58PSI / 400KPa (4.97 g/s = 460cc/min) *
Dynamic flow (2.0ms/10.0 ms(pulse width / rep rate)) 6.0 lb/hr @ 43.5PSI (0.748 g/s @ 300KPa)
Coil Resistance: High Impedance / High-Z (No ECM driver modifications required

Code:
MAP (kPa) 0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80

Injector Flow (lb/hr) 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

[dfe1]

In theory, your values should be pretty close, but if you didn't have the injectors flow checked, and don't know actual fuel pressure, you're shooting in the dark to a degree. LSx engine fuel systems usually produce stable fuel pressure at 58+/- psi, so my guess is that the injectors aren't flowing on spec. If the lean indication is correct, then the injectors are producing less than advertised fuel flow. Try reducing the values in the IFR table by 2% across the board and (assuming AFR is lean everywhere) and see if things come back in line.

[charcold-bowtie]

Hmm. I was told on another forum that maybe i ripped an O ring on the install and have a vaccuum leak. Its way lean so im gonna check this out first.