I put the 44 lbers in today, and after adjusting the IFR table, im way lean. I tried to scale the graph differnet but its always lean. Sometimes to the point of 20+ to 1 lean. I need some help. I even tried to flatline the table so it would run rich, and it still wont do that.

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)
Its an 04 . Help please....

 

sounds like you have a vacuum leak. check your bottom o-rings.

 

yeah, make sure they are seated well and/or not damaged. I know I know

 

U said it for sure dewey.. hm guess i know what im doing tomorrow. I guess COS 3 and auto ve have to wait. Thanks guys,, will report back.

 

When I put in my 60s I had to add 15% at idle and low speed. I had to add 5% from 1500 to 2500. Then I had to take away fuel from 3000 on up.

 

you changed the IFR? even the offset? When you screw with the offset you'll need to inevitably redefine your ve but should'nt by much. (speaking of 60's not 44's)

 

does your IFR look like this?
41.04759 41.17160 41.29561 41.41962 41.54364 41.66765 41.79166 41.91567 42.03968 42.16369 42.28770 42.47372 42.59773 42.72174 42.84575 42.96976 43.09377

 

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

Looks like this. I just pulled the injectors and im fixing to try it agian. The o rings looked good.

 

Hmm its definatly better. But i now have like 6 dtc. All lean banks and a missfire. So maybe im not dont yet. Fixing to get and attach a log. My AFR at WOT is 13.1, used to be 12.1. BOth banks have lean codes. ANd my LTFT are now maxed out. Any help is appreciated.

 

Your IFR numbers are too big. Slope is ok but do your table like in Okie5.3's post. What are your engine mods?