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6/6/2025, 8:39:04 PM
>>28443645
Who socketed your ecu for the s300? might give them a shout and see if they can swap it out or redo the chipping service for you. you might have a loose pin in the socket or a broken solder joint. Continuity test the board from the solder pads on the back of the EEPROM ZIF socket to the pins inside the socket. try wiggling the socket while you continuity test it. the ecu might be dead in another way that I'm unsure. as far as uploading the tune to the s300, it doesn't really give you a notification. It's been a long time since I had a s300 since switching to Haltech but try making a small change like prime time, upload it to s300, key off, unhook usb cable, key back on, hook up usb, and download from ecu and see if it contains the change you made. that's a problem with these old ecus and piggybacks. it's like the tax collectors using Pascal. that's why I went with Haltech on mine.
Who socketed your ecu for the s300? might give them a shout and see if they can swap it out or redo the chipping service for you. you might have a loose pin in the socket or a broken solder joint. Continuity test the board from the solder pads on the back of the EEPROM ZIF socket to the pins inside the socket. try wiggling the socket while you continuity test it. the ecu might be dead in another way that I'm unsure. as far as uploading the tune to the s300, it doesn't really give you a notification. It's been a long time since I had a s300 since switching to Haltech but try making a small change like prime time, upload it to s300, key off, unhook usb cable, key back on, hook up usb, and download from ecu and see if it contains the change you made. that's a problem with these old ecus and piggybacks. it's like the tax collectors using Pascal. that's why I went with Haltech on mine.
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