Chip Burning
Ok, now that you have a socketed LM, you are ready to make a calibartion for your vehicle. There will obviously be too many
variables to cover every one's needs in this article, however that is why we are doing this in the first place.
To get started, I would download Mopar Chem, and
D-cal which is
found on Yahoo groups, and you must be a member. Both programs are free, and very useful. I prefer Chem since it is
setup to work with the 87 LMs a little more than D-cal, but they can both be used to do any LM/SBEC/SMEC cal you want.
Once you have downloaded the cal software, you can pick a dissasembly to modify. I love the work that Geoff Allan has done
on his cals. It is too cool to be FREE, but it is. He is the man. There are several articles that you should read while you are
over at MoparChem.com.
Mopar Chem's Articles
Boosted Mopar FAQ
Those sites should give you a greally good idea of what needs to be done to adjust your cals. I am running a 3 bar map and
+40 (52lb.) injectors and the car is running much better than when I had my stock LM in the car with the FP turned down as low as it would
go, and a cut out raiser.
once again, I am using a willem enhanced EPROM burner, and SST27SF512 chips to make this thing run. I will run you through how
to burn the chips, as I found this to be the most frustrating part of the ordeal.
Here is a link to MCU malls enhanced eprom burner Manual
Note that on the chip there is a half circle impression or notch on one end of the chip when you are looking at it with the
legs down. This is the end that must go toward the lever of the ZIF socket. If it faces the wrong way, you will spend up to
a couple of hours trying to figure it out. You will put it in your LM the same way as you do the burner.
To burn the chips, you supposedly have to erase them first. Here is the process for that
Always use PCB3B setting, the Enhanced willem is based on the PCB3B. Do not worry about JP2 and JP3, that is for Dual Power willem programmer.
The grayed out ID icon is correct for 27SF512. The Willem programmer does not support the EPROM ID feature.
On a Enhanced willem programmer. for the chip 27SF512, the erasing the chip has different setting with programming the chip.
To erase, you need:
1. remove the safty jumper
2. select the special chip LED to the position W27C
3. set the DIP switch 3,5,7,8,9 on and 1,2.4,6,10,11,12 off.
4. then click erase button.
Once you finished the erase, you can move to write procedure as bellow:
1. close back the safety jumper.(This will set all LED to default position)
2. set the DIP switch 3,5,7,8,9 on and 1,2.4,6,10,11,12 off. (same as erase)
3. load the cal into buffer.
4 do a blank check to confirm the chip been erased and it's blank.
5. Adjust the offset to C000 This allows the chip to work even though it is much larger than the file you will be loading.
There are a couple of other ways to make this work, but this has not failed me yet.
6. click on write button to write.
Well that's it. You should now have a chip with YOUR cal on it.