Check your fuel pressure,coolant temp sensor,tps sensor and timing. My guess with an xt6? coolant temp sensor or pigtail connector for it are onnthe fritz
This is not the first time the dude has taken 100-200 reminders to respond or square up. We have had bad experiences as well and I know of many others... And $500 is a huge number. I see them online for 200 all day.... I saw the first post and it had a lot of support. Then was deleted? Not Cool at all!