- Basic demonstration of an EPROM Mitsubishi ECU -4G93 SOHC EPROM ECUMitsubishi Part: MD302726 ECU Code: E2T300902 EPROM Chip: EB13A Socketed by Patrick (Dude in a Mirage)
(Click on Images to view a the larger 1024x768 version of each) Unsocketed/untouched EPROM chip - and a socketed ECU board (the chips are soldered to the board by Mitsubishi) ZIF Socketed ECU board (easier for chip changes) Leaking Capacitor Damage Relatively common and you should check for it before the board is ruined Screen Prints are from Tuner Pro Stock EB13 Fuel Table #1
Stock EB13 Fuel Table #2
Stock EB13 Ignition Timing Table #1
Stock EB13 Ignition Timing Table #3 (there are five)
There are usually a few fuel maps and more timing maps in the ECU code. The two fuel maps on US cars are for Federal or California emmisions. There are resistors on the board that designate whch the ECU will use, thus making it a Federal or California emmisions ECU. -------------------------------------------------------------------------------------- Stock chip is a 27C256-12 (UV erasable) 256k chip If you are using a 512k chip, the code has to be on the last 256k of the chip. The easiest way to do this is to get the code ready, then copy the entire 256k of code, and paste it onto the end. It will always fill exactly 256k and your code is just on the chip twice. -------------------------------------------------------------------------------------- You can order chips from here: You are looking for C2 SST 27SF512 Chips I am currently using the Burn1 chip burner and am very happy with it |