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help with new delph 42lb

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Old 11-06-2008, 06:34 PM
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He can't use those values, you have a returnless fuel system, were he has a return.
Old 11-06-2008, 06:45 PM
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Originally Posted by kbracing96
He can't use those values, you have a returnless fuel system, were he has a return.
Kyle any ideas on fix for this.
Old 11-06-2008, 06:46 PM
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Ok, your VE is way lower in the idle cells then mine, go ahead and raise them up (the whole idle area up) till you get your afr in the ball park. Take the truck out and scan for Auto VE. Don't need to take it for too long of a drive just enough to get a rough idea how how far off your VE table is. Then add about that much to the whole VE table. Once you get back in the ball park with your tune, then you can dial it in with the normal AutoVE process.

The value you have in the IFR table is correct for the GM Multitech injectors.
Old 11-06-2008, 06:55 PM
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Here one i did last night it was quick I know it need a lot of work and doesn't have all changes as the current tune. I will retune see what i come up with.
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Old 11-06-2008, 07:05 PM
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My Injector Flow Rate is set to 5.52344 grams/ second in all cells (B4001).

If you want to richen it up a little you can lower them some. I have seen them recommended as low as 5.15 grams/second. Then you need to tune your VE and MAF tables to suit. Also you can try lowering them a little at lower kpa to see if that helps with idle fueling. Maybe try 5.102 at 0 kpa and 5.141 from 5 to 50 kpa.

First make sure that everything is sound mechanically. If you replace the o-rings use some dawn dish detergent to lubricate them and push them straight in. Do not turn or twist them when inserting the injectors. Just read that recently as it can cut them and oil lubes may deteriorate the rubber and cause them to age more quickly.
Old 11-11-2008, 02:47 PM
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Originally Posted by kbracing96
Ok, your VE is way lower in the idle cells then mine, go ahead and raise them up (the whole idle area up) till you get your afr in the ball park. Take the truck out and scan for Auto VE. Don't need to take it for too long of a drive just enough to get a rough idea how how far off your VE table is. Then add about that much to the whole VE table. Once you get back in the ball park with your tune, then you can dial it in with the normal AutoVE process.

The value you have in the IFR table is correct for the GM Multitech injectors.
Low VE cells are because of the higher than needed B3701. Dropping it back .2-.3 will allow those cells and all short pulsewidth cells to be more reasonable while not affecting high load significantly at all.

Aaron, I suspect your wideband is still off a bit. Re-enable trims for a bit and see what they're showing...
Old 11-11-2008, 05:13 PM
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I'll make those adjustments and see what happens. Can tell me the formal to re-scale my wide band?
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