I was trying to get a more basic knowledge and sone suggestions, the internet topics dont cover such a wide varietyOkay hate to do it but you really need to search. This topic pops right up so no excuses why you couldn't find anything.
Maybe WarChild is rubbing off on me...
Yes, FICM (Fuel Injection Control Module), its located on top of your driver side valve cover. tuning this is different than a PCM tune.
Your SCT will flash the PCM located in passenger side kick panel.