The dtec makes the safc look like junk. Yes you have to buy a gameboy go on ebay they can be found dirt cheap.They only cost 300 for the fuel control model that not much. Yes you can buy a safc for 225 but after you get the tach adapter thats need for the safc youll be at 300 for it to.
I have messed with a mapclamp , the safc, and the dtec, and I wouldnt sell my dtec unless I went to a AEM ecu