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Old 07-29-2011, 12:11 PM   #8
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Join Date: Jul 2009
Location: Austin, Tx
Posts: 3,904
My Ride: E30 325i
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I use tunerpro on my e30 and OBD1 applications. I have used WinOls to find the edges of the maps, and then you create an XDF from that. I am curious about the hardware - with the obd1 cars you need a EPROM device so you can read/write/adjust at will. I have never dissassembled and OBD2 ECU but I wonder if they have the same thing inside? Because if all the information is stored on one chip like it is on obd1 cars then how can you overwrite it. I assume the obd2 ecu used a programable memory - or how else would thing slike the shark injector work.
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