I recently received a set of the red Bosch III design 30 lbs/hr (0280155759) and am now needing to alter the "Injector Pulse Width Correction Vs VDC" table. I found the data for the injectors here : http://www.boschdealer.com/specsheets/0280155759cs.jpg

but it does not rate them at the values that TunerPro uses. I believe that the LS1 injectors are Bosch IIIs, am I able to use that injector's PWC table? Or is anyone here know how to make a graph to plot the data points since, these are supposed to be a linear injector. Thanks.

 

What fuel pressure are you running (line off)?

Zero out the short PW compensation table. These injectors flow more fuel at lower PW's.

RBob.

 

Do you have MS Excel? I created a spreadsheet that converts the Bosch values to GM values based on fuel pressure and interpolation. I'll post when I get home later.

 

would love to see that Excel file!
Myself, I've been planing to do some testing this summer sometime when I get my flowbench back up and running to work out some conversion factors based on test fluid type. I want to know the flow differences between E10, E85, mineral spirits, and distilled water.

Now being to make easy use of the Bosch published data will be very nice indeed.

 

Yes, I do have excell, and the pressure that I run with no vacuum is about 47.

 

Here is the compensation data:

Injector Data Sheet: M-9593-BB302, 30 #/hr red tops, skinny

280-155-759

Fuel Pressure: 47
Flow rate: 33.6 #/hr

Minimum PW @ 47 psi: 0.841

Offset Compensation versus Battery Voltage:
6.4 Volts: 3271 usec
8.0 Volts: 2216 usec
9.6 Volts: 1657 usec
11.2 Volts: 1309 usec
12.8 Volts: 1056 usec
14.4 Volts: 841 usec
15.0 Volts: 803 usec*


Short PW Compensation versus Pulse Width:
0.015 msec: -205 usec
0.244 msec: -163 usec
0.488 msec: -119 usec
0.732 msec: -75 usec
0.976 msec: -31 usec
1.220 msec: 0 usec
1.460 msec: 0 usec
1.708 msec: 0 usec
1.950 msec: 0 usec
2.197 msec: 0 usec
2.440 msec: 0 usec
2.685 msec: 0 usec
2.929 msec: 0 usec
3.170 msec: 0 usec
3.410 msec: 0 usec
3.660 msec: 0 usec
3.900 msec: 0 usec

The one with the astrik * needs to be extrapolated out. Easy to do with the graph in Tuner Pro. At 0 volts use the same value that is at 12.8 volts.

I've been wanting to make the program I use an actual Windows program and clean it up for release. As currently it is a programmers tool. It is console based and need to comment out the current injector, comment in which injector to run, set the fuel pressure, compile it and run it.

Then copy & paste the data from the console window.

If J&H releases the Excel SS, that too is good.

RBob.