yes they are for a stock ecm. They have maybe 150 miles on them on a new motor so they are still clean. Yes they were cleaned and flowed. The chips are both burnt to make the injectors flow rate at 100% so you get more out of your injectors. So they flow like a 60lb injector. My .62/.83 had no problem with this injector. I got the injectors and chips from Anderson Performance, so they are the best. Any way 400.00 takes the injectors with both chips. Thats under what I paid includeing the flow and refresh.