I find this odd. Here are zmanelite's Dyno numbers from the install.
RunFile_008 was with the Invidia Cat-Back he came in with.
RunFile_012/018 was with the STILLEN Exhaust.
I do realize we did not return your stock intake manifold and injectors. There has been a fair amount of remodeling and reorganizing in the shop over the past year and it is our fault for not getting those back to you.
Is it possible that something in the tune didn't stick? Maybe. Were there new parts added since the last tune? We haven't seen this car in quite a while. There is obviously something wrong (your AFR is flat lined rich), but what caused it is the better question because it didn't look like that when it left.