AEM just sold a bunch of series 1 boxes on ebay for 600.
lots of used ones lately for 500 too.
if you think AEM is the best ECU my opinion would be you havent tuned on much else. far better standalones out there. but given the stock evo ecus are so tunable right now they have all but eliminated the need for standalones.
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want a piece of the yellow car? (buy it)
you have to beat the blue car first
and then you have to take on the IV
my favorite quote
"if the solution is simple, God is answering"