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Old 06-24-2015, 10:49 PM   #135
teds-rex
Scooby Specialist
 
Member#: 400886
Join Date: Sep 2014
Chapter/Region: NESIC
Location: outside Boston, MA
Vehicle:
2004 STi
PSM

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I just wanted to post a THANK YOU to the OP for this. This post really saved my A$$
My 04 STi crapped out mid programming and although i always knew it was a possibility with a reflash, it still scared the crap out of me.

Built up the circuit as linked with the exception of the 555 since I can't find a damn radioshack to save my life around here. When in doubt, use a $$$ piece of lab equipment for the 125Hz clock

Anyway, just wanted to say thanks and the write up is great. Initially I was getting the imediate responce from the MCU but failing after that... seemed to be related to my timing (make sure 125Hz is going before powering ECU and make sure to start FDT JUST after powering the ECU just like a normal reflash). I powered the ECU from my car while reflashing.
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