Go back and read post #7Originally Posted by tayto
Go back and read post #7
OK, I've made some changes to the 95 G series.bin mostly just changed the cyl. volume and injector specs for the 305,ran the speed limit up to 255,raised the rev limit up tp 5000 rpm,gave it a little more timing and raised the TCC to 35mph. On the 7747 it was going into third gear at the same the TC was locking(30mph)which made a harsh third gear shift at light throttle. I burned the chip with no issues save one. The original .bin in the 7427 was loaded at the bottom of the chip(as viewed on the buffer)and when I burned the new chip it burned it into the top. In the help section of TP it states to load the chip from 000000>00FFFF and that's where it put it but that's at the top of the chip. Is this going to create a problem or can the PCM find it in that region?
The 16197427 computer uses a 64K chip, hex addresses 000000 -> 00FFFF or 0000 -> FFFF
The 1227747 computer uses a 4K chip, hex addresses 000000 -> 000FFF or 000 -> FFF
I'm tuning for the 7427, SST 27SF512 EEPROM and I did use address 000000->00FFFF and you didn't answer my question. The original prom was loaded in the bottom and the prom I burned was loaded in the top,is this going to cause a problem?
As I said!
The 27SF512 is a 64K chip, I think we can agree on that.
The '7427 uses a 64K chip, I think we can agree on that.
Chips like the 27SF512 can be used in the 1227747, which is a 4K chip, that requires an offset. The 4K offset is at the bottom 4K of the 27SF512 chip.
I simply don't understand the question, the 27SF512 is a 64K chip and the '7427 uses / requires a 64K chip.
Why the argument? If you know how big the BIN for your ECM is, and you know how big your chip is, why not just use TunerPro's built-in BIN Stacker? Just stack the BIN and you won't ever have to worry about entry vectors being wrong.
1990 Corvette (Manual)
1994 Corvette (Automatic)
1995 Corvette (Manual)
OK Dave,The 27SF512 is a 64K chip, I think we can agree on that.
The '7427 uses a 64K chip, I think we can agree on that.
Chips like the 27SF512 can be used in the 1227747, which is a 4K chip, that requires an offset. The 4K offset is at the bottom 4K of the 27SF512 chip.
I simply don't understand the question, the 27SF512 is a 64K chip and the '7427 uses / requires a 64K chip.
Let me see if I can explain this better;
First of all take the 7747 out of the equation,it's going on the shelf. I may read the PROM to compare the .bin but I am not going to use that ECM.
We know that the .bin doesn't fill the whole chip,there is a blank region,right!.
I will be running the 7427 ECM and have burned a 27SF512 chip to put in that 7427. When I read the original .bin(chip)out of the 7427 all the data was loaded in the bottom region of the chip(blank region at the top). When I burned the 27SF512 chip I used the instructions in the tunerpro help page and chose 000000->00FFFF as the address to burn the .bin in. When I loaded the buffer it put the .bin in the upper region of the chip(blank region at the bottom). Is this going to create an issue or will the processor still be able to read the .bin? Basically is it supposed to do that?
I'm not wanting a debate.
I think I'm beginning to understand the question, but my answer is a question.
Link to factory / original '7427 .bin: http://www.gearhead-efi.com/Fuel-Inj...Information-0D
Perhaps the original BCC is listed in the link to compare the .bin you're working with?
Sometimes when I read an original chip and compare the same BCC on the link above I get a few address that are different FF vs. 00. Maybe the difference I see when I read a chip vs. what .bin posted in the link is the tool / software I used to read the chip with?
I've used dozens of .bin files from the gearhead-efi library and they ALL worked, even when there are large regions of FF or 00 in the top / middle / bottom of the .bin file.
Possibly start with a known good .bin file from the gearhead-efi library and enjoy many many miles of smiles.
Looking into the $OE definition, those BINs are 64KB. The 27SF512 is also a 64KB chip. This means you should not be modifying anything at all in TunerPro's settings for burning the BIN. The BIN's layout is already correct for the chip since both are the exact same size. The only time you would change the setting is if the BIN were smaller than the chip, and even then, rather than changing the address and praying I got it right I would just stack the BIN instead with the built-in BIN Stacker.
1990 Corvette (Manual)
1994 Corvette (Automatic)
1995 Corvette (Manual)
Hiya,
Well, it looks like he thinks the '7427 will run with his '7747 file, which it will not, stacked or otherwise. Good luck to him being insulting.
-Carl
I'm with you dave,I don't want to debate it either. I thought I was asking a simple question apparently I have confused everyone.I'm not wanting a debate.
I think I'm beginning to understand the question, but my answer is a question.
Link to factory / original '7427 .bin: http://www.gearhead-efi.com/Fuel-Inj...Information-0D
Perhaps the original BCC is listed in the link to compare the .bin you're working with?
Sometimes when I read an original chip and compare the same BCC on the link above I get a few address that are different FF vs. 00. Maybe the difference I see when I read a chip vs. what .bin posted in the link is the tool / software I used to read the chip with?
I've used dozens of .bin files from the gearhead-efi library and they ALL worked, even when there are large regions of FF or 00 in the top / middle / bottom of the .bin file.
Possibly start with a known good .bin file from the gearhead-efi library and enjoy many many miles of smiles.
BCC on the 7427 is BPSA and unless I missed it I didn't find it in the listing. I bought the thing off evilbay and the description was 95 van with 350 and auto tranny. No mention of series(G10,20,30)or which trans,60 or 80. Supposedly it came out of a running van so I would "think" the BIN is good.
See attached for the information I have on BPSA
I seem to remember a gearhead-efi thread if BPSA is a V8 Manual Transmission $OD .bin file. Likely BPSA is an automatic 4L60E .bin file.
Also attached is a 4.3 manual trans .bin file.
BPSA 700R4 parameters
BPSA 700R4 Parameters.jpg
Thanks Dave,
Which definition file did you use?
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