Here is a copy of a scan i did. I have a c5 377 twin turbo running meth and a maf and 1 bar tune. Look at 13.53 seconds and please tell me why when i did this hard pull, (13lbs) by the way , that with 100% tps my afr went from 11.3 commanded to 15 to 1 or worse but only for a second.
I am afraid to get on it until i solve the ridddle