Well let me start off with any help will be greatly appreciated. I use to own a 2004 996 turbo and now I finally decided to get an 2007 997 turbo it has been driving fine till today. Then check engine light came on with DTC 1096, 2189, and 2187. The car still drives fine, the only thing I noticed is that the rpm is around 1200 and it stays there for awhile then goes back to normal. The car is stock no mods yet..

 

Those are O2 sensor and mixture codes. You likely need new primary 02 sensor (less likely new mafs, though both banks are showing lean). Do you have an Indy mechanic? Neither are terribly expensive or hard to replace.