I got the evap code today, and was wondering where the solenoid and the purge valve are located? Also I got an exhaust installed and now the motor idles very low, almost to the point of stalling. Is that normal? Thanks.

 

Clickable reference...

Stalling from an exhaust install is not normal (unless they disconnected your computer and it has not relearned yet).

More detail on the work done and your issues might help.

 

Thanks for the awesome digram, that will help a lot.