Well out of nowhere my AEM gauge is showing -- at idle, which is full lean 17+. This happened out of nowhere. I am going to do a boost leak test tonight but wanted some ideas.

WOT is dead on so I dont think injectors, fuel pump, or fuel pressure is the issue. I don't hear any exhaust leaks before the wide band either.

 

It happens sometimes, but you could have an exhaust leak.

 

Yeah but not for days at a time. Cant hear any audible leaks but will replace gaskets at manifold area if i get a chance.

 

does it happen after your car warms up? could be a crack in your downpipe or exhaust manifold.

 

nvm false alarm it was only while warming up. sorry guys