Bosch 931 injector Info

Converting To Delco ECU From Carby Or Other Injection Systems
Hof360
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Bosch 931 injector Info

Post by Hof360 »

Can anyone confirm which factory BIN is likely to have been used with the Bosch '931 LS1 injectors as I want to steal the Injector voltage vs Battery offset table from it.
Cheers,

Luke
FXST02
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Re: Bosch 931 injector Info

Post by FXST02 »

Last edited by FXST02 on Sat Dec 09, 2017 10:28 pm, edited 1 time in total.
Hof360
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Re: Bosch 931 injector Info

Post by Hof360 »

Yeah I looked at those, I just cant seem to locate an XDF to go with the various BIN's that i have tried.
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antus
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Re: Bosch 931 injector Info

Post by antus »

Try Dimentex24x7's XDFs from here http://static.moates.net/projects/0411/ with the 2001 VY Commodore bin from the bins thread (matching OSID).
Have you read the FAQ? For lots of information and links to significant threads see here: http://pcmhacking.net/forums/viewtopic.php?f=7&t=1396
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Re: Bosch 931 injector Info

Post by Dylan »

Or download EFI Live trial version. It'll open a BIN file.
Hof360
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Re: Bosch 931 injector Info

Post by Hof360 »

Ok cheers,
Had a look at those but I cant make sense of the table as it is voltage x vacuum x pulsewidth offset and the numbers are in the hundreds. Are they Nanoseconds?
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Re: Bosch 931 injector Info

Post by Hof360 »

Edit: found some that make sense, and it looks like i may be able to use some of that and transfer it over to my $12p Injector Bias vs Battery voltage table.
Not quite sure which Vacuum range ill pick from but it might get me closer.
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Re: Bosch 931 injector Info

Post by antus »

Yeah its a different system. Which ones are you using?
Have you read the FAQ? For lots of information and links to significant threads see here: http://pcmhacking.net/forums/viewtopic.php?f=7&t=1396
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The1
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Re: Bosch 931 injector Info

Post by The1 »

I have these from my flowbench.

Code: Select all

Voltage	3.0BAR	3.5BAR
0.00	3.89	3.89
1.60	3.89	3.89
3.20	3.89	3.89
4.80	3.89	3.89
6.40	1.20	1.26
8.00	0.86	0.90
9.60	0.67	0.70
11.20	0.55	0.58
12.80	0.48	0.50
14.40	0.41	0.44
16.00	0.37	0.40
17.60	0.34	0.37
19.20	0.31	0.33
20.80	0.28	0.31
22.40	0.25	0.27
24.00	0.24	0.25
25.50	0.24	0.24
Hof360
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Re: Bosch 931 injector Info

Post by Hof360 »

The1 wrote:I have these from my flowbench.

Code: Select all

Voltage	3.0BAR	3.5BAR
0.00	3.89	3.89
1.60	3.89	3.89
3.20	3.89	3.89
4.80	3.89	3.89
6.40	1.20	1.26
8.00	0.86	0.90
9.60	0.67	0.70
11.20	0.55	0.58
12.80	0.48	0.50
14.40	0.41	0.44
16.00	0.37	0.40
17.60	0.34	0.37
19.20	0.31	0.33
20.80	0.28	0.31
22.40	0.25	0.27
24.00	0.24	0.25
25.50	0.24	0.24
is this actual data from bosch '931 injectors??

If so, thankyou :thumbup: .

This info is not readily available. I have been searching on and off for days. :wall:



I have used the 40 KPA data from one of the VY LS1 Bin's and had to retune a lot of my VE Map to make it driveable again.
I will now compare your info to what I have put in before I do anymore datalogging/tuning


antus wrote:Yeah its a different system. Which ones are you using?
Im still on $12p but I was just looking for some reliable data on the Injectors I'm using as I was seeing a big change in AFR on the wideband when the Electric fans were cutting in and causing a voltage drop.

funny how none of this seemed important back in the Kalmaker days... Im still learning :study:

Luke.
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