tired M3 needs an ECU
New to the site and first time forum user. I cant get my message posted where I want so hoping to get lucky here... Im getting my old e30 m3 back on the road and eventually back to tip-top shape. Currently runs like a mule and mechanic says I need an ecu, however these pieces of love cost 1200 new and 600+ used. For those of you that have been involved in a project like this, do you pay the 600+ or hunt for something in the 300-400 range. (I hope there is a hunt involved or else this project may get a touch expensive) If there is, where is a good place to start looking?