i have my 08 chevy Silverado here im running open loop. i was able to find a good ve chart. from a 2011 chevy Silverado. my truck really likes at wot but down low i dont have any torq down low off the line. i know im still a little fat on the fuel trims. but better rich than lean here is my 2 of my logs. i finally was able to get it to start up great on the cold starts by lowering the timing in cranking down to 5 degrees working my way up. it fires up perfectly ignore the Speedo twitching. i believe its the tcm. that's bad. i keep getting hard shift. from 1st to second i have the new tcm coming this week. and the afr goes a little wonky but it pretty close. i have a pinhole exhaust leak.Attachment 106808Attachment 106809Attachment 106810Attachment 106808Attachment 106809Attachment 106810